<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:012accfc-77aa-4b04-935f-3b13a3f95234,g:f04dac30-b9ac-40be-9e6c-eba58878217b-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.pentair.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncome" xlink:type="simple" xlink:href="pnr-20251231.xsd#ConsolidatedStatementsofOperationsandComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_f01cf4e0-3275-4f34-ae69-40b399db1969" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_32f43a5b-b2ee-49a9-a215-a6d8d04537f0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_f01cf4e0-3275-4f34-ae69-40b399db1969" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_32f43a5b-b2ee-49a9-a215-a6d8d04537f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_bcf672a7-0ff6-43a6-9d27-a2d7f403dbef" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_f01cf4e0-3275-4f34-ae69-40b399db1969" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_bcf672a7-0ff6-43a6-9d27-a2d7f403dbef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_f09abf35-ffbb-4653-9430-5140685b9e6d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_454d84c2-a829-4ec6-abf2-648f39e3bd19" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareBasic_f09abf35-ffbb-4653-9430-5140685b9e6d" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_454d84c2-a829-4ec6-abf2-648f39e3bd19" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_04387461-6749-40dd-8018-70bf198af10d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareBasic_f09abf35-ffbb-4653-9430-5140685b9e6d" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_04387461-6749-40dd-8018-70bf198af10d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6d85a201-dd8d-40f2-8c0d-29c4e2ea47a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_bcde1914-9acf-4264-b269-7f7fe33db1c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6d85a201-dd8d-40f2-8c0d-29c4e2ea47a4" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_bcde1914-9acf-4264-b269-7f7fe33db1c7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_70ebe455-7c47-461a-9dfa-272769a52b10" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_6d85a201-dd8d-40f2-8c0d-29c4e2ea47a4" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_70ebe455-7c47-461a-9dfa-272769a52b10" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d5898165-c538-404c-8dcb-170bf9b87306" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_54b398ed-82d9-4c1a-84d4-67206ac5d5b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestIncomeExpenseNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d5898165-c538-404c-8dcb-170bf9b87306" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_54b398ed-82d9-4c1a-84d4-67206ac5d5b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_039c349b-eeee-4fde-b4e4-26c8baf7537a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d5898165-c538-404c-8dcb-170bf9b87306" xlink:to="loc_us-gaap_OperatingIncomeLoss_039c349b-eeee-4fde-b4e4-26c8baf7537a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_ca96bceb-237e-4e1e-923f-0ab513d34c05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d5898165-c538-404c-8dcb-170bf9b87306" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_ca96bceb-237e-4e1e-923f-0ab513d34c05" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_019c6800-a670-72ee-8e81-d2ca6a65da77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d5898165-c538-404c-8dcb-170bf9b87306" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_019c6800-a670-72ee-8e81-d2ca6a65da77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_782070bb-c949-4fc6-bee2-f067ff840c3c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_e7d4ebdc-1660-48b7-9c08-c257b91aa01f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareDiluted_782070bb-c949-4fc6-bee2-f067ff840c3c" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_e7d4ebdc-1660-48b7-9c08-c257b91aa01f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_b45d3ece-bfc8-490f-8994-d6cadad3c425" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EarningsPerShareDiluted_782070bb-c949-4fc6-bee2-f067ff840c3c" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_b45d3ece-bfc8-490f-8994-d6cadad3c425" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_9efd5118-0e9d-40ac-90ed-ffccd79af2be" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_afea11d9-b380-416f-8d02-4bb0b26e9f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_9efd5118-0e9d-40ac-90ed-ffccd79af2be" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_afea11d9-b380-416f-8d02-4bb0b26e9f6c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_97a159b6-45a7-4194-8a53-58f85037097a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_9efd5118-0e9d-40ac-90ed-ffccd79af2be" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_97a159b6-45a7-4194-8a53-58f85037097a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_7a1f4c6e-142d-4aab-ada6-2c94b9f02a6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_8d8a18d2-c207-4ebd-88b1-547d4d78c7e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_7a1f4c6e-142d-4aab-ada6-2c94b9f02a6f" xlink:to="loc_us-gaap_GrossProfit_8d8a18d2-c207-4ebd-88b1-547d4d78c7e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_cb6e0a47-8eae-4112-ab3f-0eb190d681ee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_7a1f4c6e-142d-4aab-ada6-2c94b9f02a6f" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_cb6e0a47-8eae-4112-ab3f-0eb190d681ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_c349d206-05c6-4a9e-8c76-9fed610b66eb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_7a1f4c6e-142d-4aab-ada6-2c94b9f02a6f" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_c349d206-05c6-4a9e-8c76-9fed610b66eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_5733685c-7b30-415c-a5e0-a879b52baebd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_dba6fbf1-bbe5-4c0a-b112-247fcc362f5f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_5733685c-7b30-415c-a5e0-a879b52baebd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_dba6fbf1-bbe5-4c0a-b112-247fcc362f5f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_f908fa30-7175-4083-966a-637311c7a562" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_5733685c-7b30-415c-a5e0-a879b52baebd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_f908fa30-7175-4083-966a-637311c7a562" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_2021a099-b499-4c9e-80b9-9673ffa1e89f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_5733685c-7b30-415c-a5e0-a879b52baebd" xlink:to="loc_us-gaap_ProfitLoss_2021a099-b499-4c9e-80b9-9673ffa1e89f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="pnr-20251231.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_28192554-409f-496c-bddb-eee022140ff3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_a25cf665-39db-4623-a5fc-c8e73dc9cbe7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_28192554-409f-496c-bddb-eee022140ff3" xlink:to="loc_us-gaap_AccountsPayableCurrent_a25cf665-39db-4623-a5fc-c8e73dc9cbe7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_75b9f755-a7b1-45af-88bc-3c05c0ba40f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_28192554-409f-496c-bddb-eee022140ff3" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_75b9f755-a7b1-45af-88bc-3c05c0ba40f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_042468ef-da83-44f7-81b9-251df6000a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_28192554-409f-496c-bddb-eee022140ff3" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_042468ef-da83-44f7-81b9-251df6000a4b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermBorrowings_21aec786-eaf7-4f48-b2c9-dab6653fedb4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherShortTermBorrowings"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_28192554-409f-496c-bddb-eee022140ff3" xlink:to="loc_us-gaap_OtherShortTermBorrowings_21aec786-eaf7-4f48-b2c9-dab6653fedb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_0ad2ca83-c5e7-4201-88ca-8737742de5b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_1413bb7d-7f18-452c-9c15-74602c6fda1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0ad2ca83-c5e7-4201-88ca-8737742de5b6" xlink:to="loc_us-gaap_OtherAssetsCurrent_1413bb7d-7f18-452c-9c15-74602c6fda1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_06fe4d47-f614-48b4-9af7-ed5a46bf9b33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0ad2ca83-c5e7-4201-88ca-8737742de5b6" xlink:to="loc_us-gaap_InventoryNet_06fe4d47-f614-48b4-9af7-ed5a46bf9b33" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndNotesReceivableNet_889b9233-f6f2-4a44-8ee0-0322a1c5ec17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsAndNotesReceivableNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0ad2ca83-c5e7-4201-88ca-8737742de5b6" xlink:to="loc_us-gaap_AccountsAndNotesReceivableNet_889b9233-f6f2-4a44-8ee0-0322a1c5ec17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_ae549ac5-85cf-4734-b93b-4638e73929e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_0ad2ca83-c5e7-4201-88ca-8737742de5b6" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_ae549ac5-85cf-4734-b93b-4638e73929e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_99d0c82f-6c67-4416-a693-cd4649fcfe68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_474fc17d-f14d-42fc-97ba-9a53a9013f3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_99d0c82f-6c67-4416-a693-cd4649fcfe68" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_474fc17d-f14d-42fc-97ba-9a53a9013f3b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_9eb96ef5-afbe-4ff5-b732-d0e86d3f1094" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_99d0c82f-6c67-4416-a693-cd4649fcfe68" xlink:to="loc_us-gaap_Goodwill_9eb96ef5-afbe-4ff5-b732-d0e86d3f1094" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_3e4af05c-43d4-47e0-be3a-eebbd84b450c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_99d0c82f-6c67-4416-a693-cd4649fcfe68" xlink:to="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_3e4af05c-43d4-47e0-be3a-eebbd84b450c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_fbacad4d-6afd-486b-acd4-9d9ba93d16ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_43de0894-d84a-40a6-b35a-41f894ba1823" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_fbacad4d-6afd-486b-acd4-9d9ba93d16ce" xlink:to="loc_us-gaap_Liabilities_43de0894-d84a-40a6-b35a-41f894ba1823" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_54e1b2e0-47bb-48cf-b0cd-2bad8b5f707f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_fbacad4d-6afd-486b-acd4-9d9ba93d16ce" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_54e1b2e0-47bb-48cf-b0cd-2bad8b5f707f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_f169ea5c-02f2-4b07-8625-bdb3e7bc01c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValueOutstanding_3b72a643-806a-41ce-bee1-6860c870ca35" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValueOutstanding"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_f169ea5c-02f2-4b07-8625-bdb3e7bc01c4" xlink:to="loc_us-gaap_CommonStockValueOutstanding_3b72a643-806a-41ce-bee1-6860c870ca35" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_c8ef8ee8-7ea7-458f-a9bc-4a364c9108fa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_f169ea5c-02f2-4b07-8625-bdb3e7bc01c4" xlink:to="loc_us-gaap_AdditionalPaidInCapital_c8ef8ee8-7ea7-458f-a9bc-4a364c9108fa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_fa4f2096-935a-4fe2-bd3b-018f44e62db0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_f169ea5c-02f2-4b07-8625-bdb3e7bc01c4" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_fa4f2096-935a-4fe2-bd3b-018f44e62db0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_31e52e8b-0a5f-4fcb-a648-cd743b1797a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_f169ea5c-02f2-4b07-8625-bdb3e7bc01c4" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_31e52e8b-0a5f-4fcb-a648-cd743b1797a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_9836d9b9-8b44-417e-9292-c3b586496368" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_7196e0da-a41d-4700-98b2-52a24895116d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_9836d9b9-8b44-417e-9292-c3b586496368" xlink:to="loc_us-gaap_AssetsCurrent_7196e0da-a41d-4700-98b2-52a24895116d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_44332e2e-1948-4afe-9f81-bf0403ad476c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_9836d9b9-8b44-417e-9292-c3b586496368" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_44332e2e-1948-4afe-9f81-bf0403ad476c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_06cc63ff-a3c0-40ab-959b-0111a2294fa4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_9836d9b9-8b44-417e-9292-c3b586496368" xlink:to="loc_us-gaap_AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment_06cc63ff-a3c0-40ab-959b-0111a2294fa4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_7f460d0d-6b1e-43cc-a794-0b891b2afbda" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_3fff5279-e310-423e-ae78-fb2a7082fe4e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7f460d0d-6b1e-43cc-a794-0b891b2afbda" xlink:to="loc_us-gaap_LiabilitiesCurrent_3fff5279-e310-423e-ae78-fb2a7082fe4e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_ea9cb9e3-7887-4d14-bf99-f293cffbaca3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7f460d0d-6b1e-43cc-a794-0b891b2afbda" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_ea9cb9e3-7887-4d14-bf99-f293cffbaca3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_a58e0236-7b92-4a0e-bcb3-d535d1d91286" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7f460d0d-6b1e-43cc-a794-0b891b2afbda" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_a58e0236-7b92-4a0e-bcb3-d535d1d91286" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8b190f6d-4c04-4a5d-9657-315af4a6e5b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7f460d0d-6b1e-43cc-a794-0b891b2afbda" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_8b190f6d-4c04-4a5d-9657-315af4a6e5b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_ee2f3e7a-c34e-4008-a422-0c2843b8f227" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_7f460d0d-6b1e-43cc-a794-0b891b2afbda" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_ee2f3e7a-c34e-4008-a422-0c2843b8f227" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="pnr-20251231.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4580bd2c-90a6-4e19-9c86-32e3eea3e95e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_a05d09b5-b157-49ac-8576-d7a28f3b0a51" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4580bd2c-90a6-4e19-9c86-32e3eea3e95e" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_a05d09b5-b157-49ac-8576-d7a28f3b0a51" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_b4008172-c753-4271-9c75-3bbdf66b9810" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4580bd2c-90a6-4e19-9c86-32e3eea3e95e" xlink:to="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_b4008172-c753-4271-9c75-3bbdf66b9810" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromShortTermDebt_28bc8c0d-eb8b-4502-939e-021b68f6513e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromShortTermDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_us-gaap_ProceedsFromShortTermDebt_28bc8c0d-eb8b-4502-939e-021b68f6513e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_3a4b2d29-d644-4329-8243-d1a4bd1b56b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_us-gaap_ProceedsFromRepaymentsOfLinesOfCredit_3a4b2d29-d644-4329-8243-d1a4bd1b56b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_9ae5be5d-63fa-458b-b7fd-ffd04048e383" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_9ae5be5d-63fa-458b-b7fd-ffd04048e383" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_de9ca9ac-a407-46ae-830f-dc1dbbf5af17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_de9ca9ac-a407-46ae-830f-dc1dbbf5af17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_ProceedsIssuanceOfSharesShareBasedPaymentArrangementIncludingOptionExercisedNetOfSharesWithheld_22fd3c23-a877-464c-8df5-be6a71651dce" xlink:href="pnr-20251231.xsd#pnr_ProceedsIssuanceOfSharesShareBasedPaymentArrangementIncludingOptionExercisedNetOfSharesWithheld"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_pnr_ProceedsIssuanceOfSharesShareBasedPaymentArrangementIncludingOptionExercisedNetOfSharesWithheld_22fd3c23-a877-464c-8df5-be6a71651dce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_cfe32bd5-2a67-4bb6-a833-17978aa60134" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_cfe32bd5-2a67-4bb6-a833-17978aa60134" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_45cfaa48-a4fb-4d02-95bb-4fbbd9a2431d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_45cfaa48-a4fb-4d02-95bb-4fbbd9a2431d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromHedgeFinancingActivities_a0057b92-cf66-4f6d-833e-4589e7bceab4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromHedgeFinancingActivities"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_b13944ae-3fe9-4c31-83f7-5a28b955997a" xlink:to="loc_us-gaap_PaymentsForProceedsFromHedgeFinancingActivities_a0057b92-cf66-4f6d-833e-4589e7bceab4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_019c6803-d8f1-7830-ac2c-2152e82be6f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_019c6803-d8f1-7830-ac2c-2152e82be6f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019c6803-d8f1-7fdd-87b8-e3e191ecdf39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_019c6803-d8f1-7fdd-87b8-e3e191ecdf39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_019c6803-d8f1-7d13-96e1-1d67207d85f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_Depreciation_019c6803-d8f1-7d13-96e1-1d67207d85f4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019c6803-d8f1-761c-834f-d32c7e431816" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019c6803-d8f1-761c-834f-d32c7e431816" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_019c6803-d8f1-7a3d-9084-c8945ce5c888" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_019c6803-d8f1-7a3d-9084-c8945ce5c888" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_019c6803-d8f1-7082-a3cd-526e2bb7a4ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_019c6803-d8f1-7082-a3cd-526e2bb7a4ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019c6803-d8f1-734a-9c3d-f3ff3e331b07" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_ShareBasedCompensation_019c6803-d8f1-734a-9c3d-f3ff3e331b07" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_019c6803-d8f1-7ff6-b8b7-4025e31fb5ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_AssetImpairmentCharges_019c6803-d8f1-7ff6-b8b7-4025e31fb5ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_019c6803-d8f1-7214-896c-e0f7407b913b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementBenefitExpense"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitExpense_019c6803-d8f1-7214-896c-e0f7407b913b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_019c6803-d8f1-7b6f-aee0-a926b76799ac" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementBenefitContributions"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitContributions_019c6803-d8f1-7b6f-aee0-a926b76799ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfOtherAssets_019c6803-d8f1-7431-871e-3c3d1cd2a148" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfOtherAssets"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_GainLossOnSaleOfOtherAssets_019c6803-d8f1-7431-871e-3c3d1cd2a148" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019c6803-d8f1-74c0-b106-806955e6010e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019c6803-d8f1-74c0-b106-806955e6010e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_019c6803-d8f1-73f2-b19a-65e7aadfc668" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_019c6803-d8f1-73f2-b19a-65e7aadfc668" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_019c6803-d8f1-73dd-ab73-d05e3469182a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_019c6803-d8f1-73dd-ab73-d05e3469182a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019c6803-d8f1-73d5-af7a-ccd6e5b977d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_019c6803-d8f1-73d5-af7a-ccd6e5b977d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherEmployeeRelatedLiabilities_019c6803-d8f1-78ea-87dd-a1e6659957f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherEmployeeRelatedLiabilities"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherEmployeeRelatedLiabilities_019c6803-d8f1-78ea-87dd-a1e6659957f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_019c6803-d8f1-7b34-8ef6-ca65a695a154" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherCurrentLiabilities"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_019c6803-d8f1-7b34-8ef6-ca65a695a154" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet_019c6803-d8f1-77ff-bcdb-d0dc6e80327d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet"/>
    <link:calculationArc order="18" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet_019c6803-d8f1-77ff-bcdb-d0dc6e80327d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_f7bd5636-5384-4d61-8e1d-744b0d4d32d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_e523c556-eb86-490f-bdd0-0f5024fa8c45" xlink:to="loc_us-gaap_ProfitLoss_f7bd5636-5384-4d61-8e1d-744b0d4d32d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_76213e5d-ce67-4a76-8888-274c34882006" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_430e93d3-c194-4ffb-9524-c80aea366b8e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_76213e5d-ce67-4a76-8888-274c34882006" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_430e93d3-c194-4ffb-9524-c80aea366b8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireInvestments_5aab10c4-cec4-4ac7-905f-36ccbeb74633" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireInvestments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_76213e5d-ce67-4a76-8888-274c34882006" xlink:to="loc_us-gaap_PaymentsToAcquireInvestments_5aab10c4-cec4-4ac7-905f-36ccbeb74633" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_25d8dde8-2da6-4ad9-9e9b-788bcea0e3f6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_76213e5d-ce67-4a76-8888-274c34882006" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_25d8dde8-2da6-4ad9-9e9b-788bcea0e3f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromHedgeInvestingActivities_822029cd-a7d1-41ea-b259-66d836acdadc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromHedgeInvestingActivities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_76213e5d-ce67-4a76-8888-274c34882006" xlink:to="loc_us-gaap_PaymentsForProceedsFromHedgeInvestingActivities_822029cd-a7d1-41ea-b259-66d836acdadc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_7a192044-39d9-4e4b-8a38-56d206cab175" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_76213e5d-ce67-4a76-8888-274c34882006" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_7a192044-39d9-4e4b-8a38-56d206cab175" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019c6805-018c-70e8-8780-3f5a0e2d2cb7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_76213e5d-ce67-4a76-8888-274c34882006" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_019c6805-018c-70e8-8780-3f5a0e2d2cb7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55d2cda3-b1b5-4bfc-b291-ec00722f9905" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9367e114-0b77-42ec-946d-2d56467ea84f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55d2cda3-b1b5-4bfc-b291-ec00722f9905" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_9367e114-0b77-42ec-946d-2d56467ea84f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_54ba02f3-b6e6-4b59-966e-e1d80b1fcc59" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55d2cda3-b1b5-4bfc-b291-ec00722f9905" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_54ba02f3-b6e6-4b59-966e-e1d80b1fcc59" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_aa00c96a-2bd5-4e26-b0d6-393789283fa3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55d2cda3-b1b5-4bfc-b291-ec00722f9905" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_aa00c96a-2bd5-4e26-b0d6-393789283fa3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_50a74049-2dd8-4cde-b0a7-d74629e4a4c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_55d2cda3-b1b5-4bfc-b291-ec00722f9905" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_50a74049-2dd8-4cde-b0a7-d74629e4a4c7" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesScheduleofContractAssetsandLiabilitiesDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesScheduleofContractAssetsandLiabilitiesDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesScheduleofContractAssetsandLiabilitiesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_pnr_ContractWithCustomerAssetLiabilityNet_fdc16025-7edc-4696-81b5-44e72fbb26b3" xlink:href="pnr-20251231.xsd#pnr_ContractWithCustomerAssetLiabilityNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_5887a50e-8029-4c49-ae34-bec3626afc7f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_ContractWithCustomerAssetLiabilityNet_fdc16025-7edc-4696-81b5-44e72fbb26b3" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_5887a50e-8029-4c49-ae34-bec3626afc7f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_dae43601-5c31-4e80-830b-436b2d470026" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_ContractWithCustomerAssetLiabilityNet_fdc16025-7edc-4696-81b5-44e72fbb26b3" xlink:to="loc_us-gaap_ContractWithCustomerLiability_dae43601-5c31-4e80-830b-436b2d470026" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/EarningsPerShareDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#EarningsPerShareDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/EarningsPerShareDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_967cb30b-6ebe-4ba9-83c5-6f9dbfb5cfc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_f070bdc8-c580-4f1b-bea1-9db20e766bb8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_967cb30b-6ebe-4ba9-83c5-6f9dbfb5cfc2" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_f070bdc8-c580-4f1b-bea1-9db20e766bb8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_4dc506aa-9a0f-41ca-a099-a9ed47d60546" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_967cb30b-6ebe-4ba9-83c5-6f9dbfb5cfc2" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_4dc506aa-9a0f-41ca-a099-a9ed47d60546" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/RestructuringandTransformationProgramCostsIncludedinSellingGeneralAdministrativeexpensesonConsolidatedStatementsofIncomeDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#RestructuringandTransformationProgramCostsIncludedinSellingGeneralAdministrativeexpensesonConsolidatedStatementsofIncomeDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/RestructuringandTransformationProgramCostsIncludedinSellingGeneralAdministrativeexpensesonConsolidatedStatementsofIncomeDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_pnr_TotalRestructuringAndTransformationCosts_c7c067c9-548d-47de-b52b-054045176410" xlink:href="pnr-20251231.xsd#pnr_TotalRestructuringAndTransformationCosts"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_TransformationCosts_90e0f117-abbb-438b-9c38-2ea75c148863" xlink:href="pnr-20251231.xsd#pnr_TransformationCosts"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_TotalRestructuringAndTransformationCosts_c7c067c9-548d-47de-b52b-054045176410" xlink:to="loc_pnr_TransformationCosts_90e0f117-abbb-438b-9c38-2ea75c148863" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_032da2b7-7971-4ddb-ab90-2a2b745976ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_TotalRestructuringAndTransformationCosts_c7c067c9-548d-47de-b52b-054045176410" xlink:to="loc_us-gaap_RestructuringCharges_032da2b7-7971-4ddb-ab90-2a2b745976ae" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/GoodwillandOtherIdentifiableIntangibleAssetsIdentifiableIntangibleAssetsDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#GoodwillandOtherIdentifiableIntangibleAssetsIdentifiableIntangibleAssetsDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/GoodwillandOtherIdentifiableIntangibleAssetsIdentifiableIntangibleAssetsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_26528a69-8ef8-427a-8aba-7af7bfdb4a01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_4b7dce59-f8b0-4a74-98b1-39f742a68db5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_26528a69-8ef8-427a-8aba-7af7bfdb4a01" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_4b7dce59-f8b0-4a74-98b1-39f742a68db5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01ad10c2-0edf-4bb2-b6dc-1c642620cf9b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_26528a69-8ef8-427a-8aba-7af7bfdb4a01" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01ad10c2-0edf-4bb2-b6dc-1c642620cf9b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_9415863d-5b2b-43cc-b74d-295f2f99e4d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ae80f980-3b29-4879-b9c3-22e87f80a445" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_9415863d-5b2b-43cc-b74d-295f2f99e4d3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_ae80f980-3b29-4879-b9c3-22e87f80a445" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_02489888-c853-4edb-a0ad-57d379fa64ea" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_9415863d-5b2b-43cc-b74d-295f2f99e4d3" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_02489888-c853-4edb-a0ad-57d379fa64ea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_61d02a38-14f1-43f7-b20d-b01f0f03bda0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b8b58cd5-dece-40bd-8f84-2c6115c553a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_61d02a38-14f1-43f7-b20d-b01f0f03bda0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b8b58cd5-dece-40bd-8f84-2c6115c553a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_28ebdda3-9205-4a01-95bc-1a4df4c96df8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_61d02a38-14f1-43f7-b20d-b01f0f03bda0" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_28ebdda3-9205-4a01-95bc-1a4df4c96df8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/SupplementalBalanceSheetInformationDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#SupplementalBalanceSheetInformationDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/SupplementalBalanceSheetInformationDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_62e6cc2d-4174-4edd-85df-1dd1174591c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSupplies_e440c376-d2f7-4d2a-ba21-e229075da695" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryRawMaterialsAndSupplies"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_62e6cc2d-4174-4edd-85df-1dd1174591c5" xlink:to="loc_us-gaap_InventoryRawMaterialsAndSupplies_e440c376-d2f7-4d2a-ba21-e229075da695" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcess_d800ea9a-f48c-4706-8979-2e9298aca877" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcess"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_62e6cc2d-4174-4edd-85df-1dd1174591c5" xlink:to="loc_us-gaap_InventoryWorkInProcess_d800ea9a-f48c-4706-8979-2e9298aca877" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoods_58e58433-b2c8-4479-adae-3d09c35d9d4c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryFinishedGoods"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_62e6cc2d-4174-4edd-85df-1dd1174591c5" xlink:to="loc_us-gaap_InventoryFinishedGoods_58e58433-b2c8-4479-adae-3d09c35d9d4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_ac831647-4398-45d3-b9ab-01ced2d33051" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_dfb02d99-3d1b-4ed9-9393-941ef59fc0b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_ac831647-4398-45d3-b9ab-01ced2d33051" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_dfb02d99-3d1b-4ed9-9393-941ef59fc0b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_785c2532-0031-4052-b79d-8b0ecdd713f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_ac831647-4398-45d3-b9ab-01ced2d33051" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_785c2532-0031-4052-b79d-8b0ecdd713f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_07baef10-0d71-421e-9b70-383a619d5274" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_OtherCurrentAssets_85b2b250-f469-4d9e-b347-23b8319f238c" xlink:href="pnr-20251231.xsd#pnr_OtherCurrentAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsCurrent_07baef10-0d71-421e-9b70-383a619d5274" xlink:to="loc_pnr_OtherCurrentAssets_85b2b250-f469-4d9e-b347-23b8319f238c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_456c3b85-7630-4a5d-969d-77b213d6f07c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsCurrent_07baef10-0d71-421e-9b70-383a619d5274" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_456c3b85-7630-4a5d-969d-77b213d6f07c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPrepaidExpenseCurrent_11daad14-a080-4006-a3ca-02a01856c739" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPrepaidExpenseCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsCurrent_07baef10-0d71-421e-9b70-383a619d5274" xlink:to="loc_us-gaap_OtherPrepaidExpenseCurrent_11daad14-a080-4006-a3ca-02a01856c739" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_8c6bf3d1-f1a2-4e7f-a5ed-973fefe7c676" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_Prepaidtaxeslongterm_15fbc9dd-127f-4ba5-9541-064761fe243c" xlink:href="pnr-20251231.xsd#pnr_Prepaidtaxeslongterm"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_8c6bf3d1-f1a2-4e7f-a5ed-973fefe7c676" xlink:to="loc_pnr_Prepaidtaxeslongterm_15fbc9dd-127f-4ba5-9541-064761fe243c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationPlanAssets_601134fd-29cd-4e77-8b6a-5a9cc5bda5a5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredCompensationPlanAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_8c6bf3d1-f1a2-4e7f-a5ed-973fefe7c676" xlink:to="loc_us-gaap_DeferredCompensationPlanAssets_601134fd-29cd-4e77-8b6a-5a9cc5bda5a5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_OtherLongTermAssets_dbd50771-76a7-4a54-9bd0-feaa3425d529" xlink:href="pnr-20251231.xsd#pnr_OtherLongTermAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_8c6bf3d1-f1a2-4e7f-a5ed-973fefe7c676" xlink:to="loc_pnr_OtherLongTermAssets_dbd50771-76a7-4a54-9bd0-feaa3425d529" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_6cd9adea-401d-434e-b73a-a776420f2602" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_8c6bf3d1-f1a2-4e7f-a5ed-973fefe7c676" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_6cd9adea-401d-434e-b73a-a776420f2602" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_0de03dfb-93c0-4f3f-94ed-ed42322a5d13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentGross_7e67c2bd-f9da-4f45-b090-79a20c96568b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MachineryAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_0de03dfb-93c0-4f3f-94ed-ed42322a5d13" xlink:to="loc_us-gaap_MachineryAndEquipmentGross_7e67c2bd-f9da-4f45-b090-79a20c96568b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareGross_3280d890-830a-4c84-81d2-7809e87b2cf4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalizedComputerSoftwareGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_0de03dfb-93c0-4f3f-94ed-ed42322a5d13" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareGross_3280d890-830a-4c84-81d2-7809e87b2cf4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingsAndImprovementsGross_d2d3602a-51aa-4181-8afb-74c64075421e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_BuildingsAndImprovementsGross"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_0de03dfb-93c0-4f3f-94ed-ed42322a5d13" xlink:to="loc_us-gaap_BuildingsAndImprovementsGross_d2d3602a-51aa-4181-8afb-74c64075421e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAndLandImprovements_1ab43d19-9f65-4372-baaa-2bf84b972480" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LandAndLandImprovements"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_0de03dfb-93c0-4f3f-94ed-ed42322a5d13" xlink:to="loc_us-gaap_LandAndLandImprovements_1ab43d19-9f65-4372-baaa-2bf84b972480" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressGross_f6082d0f-066d-4000-8249-395ae150b3f1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConstructionInProgressGross"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_0de03dfb-93c0-4f3f-94ed-ed42322a5d13" xlink:to="loc_us-gaap_ConstructionInProgressGross_f6082d0f-066d-4000-8249-395ae150b3f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_640c80a4-0e5d-4b80-b39b-d0b80f822ea4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_9b0f96ad-1e3d-4cd8-b33d-699f4b6c21d3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_640c80a4-0e5d-4b80-b39b-d0b80f822ea4" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_9b0f96ad-1e3d-4cd8-b33d-699f4b6c21d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_dcaa122e-7014-47ce-b12d-d6d6c80621ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_640c80a4-0e5d-4b80-b39b-d0b80f822ea4" xlink:to="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_dcaa122e-7014-47ce-b12d-d6d6c80621ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_OtherLongTermLiabilities_273e23a4-f90e-4818-bdfe-9dbda001c444" xlink:href="pnr-20251231.xsd#pnr_OtherLongTermLiabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_640c80a4-0e5d-4b80-b39b-d0b80f822ea4" xlink:to="loc_pnr_OtherLongTermLiabilities_273e23a4-f90e-4818-bdfe-9dbda001c444" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationLiabilityCurrent_1481c6a6-c64b-4c0c-a421-5a44d7165392" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredCompensationLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_640c80a4-0e5d-4b80-b39b-d0b80f822ea4" xlink:to="loc_us-gaap_DeferredCompensationLiabilityCurrent_1481c6a6-c64b-4c0c-a421-5a44d7165392" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_89668f32-00b5-486b-80de-b0fcb3c4baec" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedIncomeTaxesNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_640c80a4-0e5d-4b80-b39b-d0b80f822ea4" xlink:to="loc_us-gaap_AccruedIncomeTaxesNoncurrent_89668f32-00b5-486b-80de-b0fcb3c4baec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SelfInsuranceReserveNoncurrent_bd8cf9c1-6508-4c30-b2f6-7a67b66f8519" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SelfInsuranceReserveNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_640c80a4-0e5d-4b80-b39b-d0b80f822ea4" xlink:to="loc_us-gaap_SelfInsuranceReserveNoncurrent_bd8cf9c1-6508-4c30-b2f6-7a67b66f8519" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrent_0aa687df-d40b-445c-aa19-38d917a6062e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_DividendsPayableCurrent_0aa687df-d40b-445c-aa19-38d917a6062e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_AccruedFreight_bbcea6d0-bfef-42d6-8a80-e1d472bfd48c" xlink:href="pnr-20251231.xsd#pnr_AccruedFreight"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_pnr_AccruedFreight_bbcea6d0-bfef-42d6-8a80-e1d472bfd48c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_560464d8-5296-4693-a4f0-340fbeee6869" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TaxesPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_TaxesPayableCurrentAndNoncurrent_560464d8-5296-4693-a4f0-340fbeee6869" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_030861be-ffd5-4ed1-97db-e5eab95772fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_030861be-ffd5-4ed1-97db-e5eab95772fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_d02d8427-8467-4521-8fd6-fd683dc3db47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_d02d8427-8467-4521-8fd6-fd683dc3db47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedExchangeFeeRebateCurrentAndNoncurrent_241f83b5-8cd7-4091-bf40-9d68d8261588" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedExchangeFeeRebateCurrentAndNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_AccruedExchangeFeeRebateCurrentAndNoncurrent_241f83b5-8cd7-4091-bf40-9d68d8261588" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_500d2bc8-ebdd-48cd-83d6-b309bc11ab17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_500d2bc8-ebdd-48cd-83d6-b309bc11ab17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_8ea6bb62-79b1-4037-91a0-ee44193e8846" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_8ea6bb62-79b1-4037-91a0-ee44193e8846" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_e4855d2b-9795-429d-a4fc-fefd1829cd1c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_e4855d2b-9795-429d-a4fc-fefd1829cd1c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_5815fac4-efa6-4382-8f9f-80593ff1a928" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringReserve"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherLiabilitiesCurrent_5190d3cb-521f-4fcc-87f5-cba0220105b6" xlink:to="loc_us-gaap_RestructuringReserve_5815fac4-efa6-4382-8f9f-80593ff1a928" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/AccumulatedOtherComprehensiveLossDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#AccumulatedOtherComprehensiveLossDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/AccumulatedOtherComprehensiveLossDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_f0a9e708-61c3-4a1c-8435-475ae242b3b3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_8041fe68-d670-47e3-9385-33263e3d5214" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_f0a9e708-61c3-4a1c-8435-475ae242b3b3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_8041fe68-d670-47e3-9385-33263e3d5214" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociLossCashFlowHedgeCumulativeGainLossAfterTax_ea78df51-e5ae-4eb0-9ed6-3a1490662e2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AociLossCashFlowHedgeCumulativeGainLossAfterTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_f0a9e708-61c3-4a1c-8435-475ae242b3b3" xlink:to="loc_us-gaap_AociLossCashFlowHedgeCumulativeGainLossAfterTax_ea78df51-e5ae-4eb0-9ed6-3a1490662e2d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/DebtDebtOutstandingandAverageInterestRatesDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#DebtDebtOutstandingandAverageInterestRatesDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/DebtDebtOutstandingandAverageInterestRatesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_bc665a03-5644-4916-b483-eaec66a4a112" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_5d6fff2b-1805-4237-a6f5-f2dcd0cfeb37" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_bc665a03-5644-4916-b483-eaec66a4a112" xlink:to="loc_us-gaap_LongTermDebt_5d6fff2b-1805-4237-a6f5-f2dcd0cfeb37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermBorrowings_05ce4dba-118f-4cec-8236-eb1b58e9b412" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherShortTermBorrowings"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_bc665a03-5644-4916-b483-eaec66a4a112" xlink:to="loc_us-gaap_OtherShortTermBorrowings_05ce4dba-118f-4cec-8236-eb1b58e9b412" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/DebtDebtOutstandingandAverageInterestRatesDetail_1" xlink:type="simple" xlink:href="pnr-20251231.xsd#DebtDebtOutstandingandAverageInterestRatesDetail_1"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/DebtDebtOutstandingandAverageInterestRatesDetail_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_06e47cad-8976-4b09-b793-596c76a284e0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherShortTermBorrowings_2f223daa-a047-4125-8b44-ce0f5cc775ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherShortTermBorrowings"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_06e47cad-8976-4b09-b793-596c76a284e0" xlink:to="loc_us-gaap_OtherShortTermBorrowings_2f223daa-a047-4125-8b44-ce0f5cc775ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_8f76adf7-3562-4991-a313-e1a9a7006b95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_06e47cad-8976-4b09-b793-596c76a284e0" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_8f76adf7-3562-4991-a313-e1a9a7006b95" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_48a79399-027f-4f80-84c2-091e086c8b34" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_06e47cad-8976-4b09-b793-596c76a284e0" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_48a79399-027f-4f80-84c2-091e086c8b34" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/DebtDebtOutstandingMaturesonCalendarYearBasisDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#DebtDebtOutstandingMaturesonCalendarYearBasisDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/DebtDebtOutstandingMaturesonCalendarYearBasisDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_pnr_DebtLongTermAndShortTermCombinedAmountGross_b6d845d2-d8bf-4dab-bc8a-b506e5c08b06" xlink:href="pnr-20251231.xsd#pnr_DebtLongTermAndShortTermCombinedAmountGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_8dac9f71-cff8-4e43-ad3f-0eecac2011e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_DebtLongTermAndShortTermCombinedAmountGross_b6d845d2-d8bf-4dab-bc8a-b506e5c08b06" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_8dac9f71-cff8-4e43-ad3f-0eecac2011e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_6ad3d4f7-8353-4125-90a0-aa928ebcc6b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_DebtLongTermAndShortTermCombinedAmountGross_b6d845d2-d8bf-4dab-bc8a-b506e5c08b06" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_6ad3d4f7-8353-4125-90a0-aa928ebcc6b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_408f5caa-cbd7-44b0-bb7b-7770d9bc439a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_DebtLongTermAndShortTermCombinedAmountGross_b6d845d2-d8bf-4dab-bc8a-b506e5c08b06" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_408f5caa-cbd7-44b0-bb7b-7770d9bc439a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_d9159a78-aa73-432d-ad04-1ded801fa5d2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_DebtLongTermAndShortTermCombinedAmountGross_b6d845d2-d8bf-4dab-bc8a-b506e5c08b06" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_d9159a78-aa73-432d-ad04-1ded801fa5d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_8acb49cb-8028-4fbb-857d-a97e83545c77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_DebtLongTermAndShortTermCombinedAmountGross_b6d845d2-d8bf-4dab-bc8a-b506e5c08b06" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_8acb49cb-8028-4fbb-857d-a97e83545c77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ed916fd7-291c-45fd-a3e6-99a59a80d57b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_pnr_DebtLongTermAndShortTermCombinedAmountGross_b6d845d2-d8bf-4dab-bc8a-b506e5c08b06" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_ed916fd7-291c-45fd-a3e6-99a59a80d57b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/DerivativesandFinancialInstrumentsRecordedAmountsandEstimatedFairValuesofLongtermDebtandDerivativeFinancialInstrumentsDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#DerivativesandFinancialInstrumentsRecordedAmountsandEstimatedFairValuesofLongtermDebtandDerivativeFinancialInstrumentsDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/DerivativesandFinancialInstrumentsRecordedAmountsandEstimatedFairValuesofLongtermDebtandDerivativeFinancialInstrumentsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_cd9485a1-5ae7-4ce8-a15f-0641a9caa570" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtPercentageBearingVariableInterestAmount_f6f1cce6-66a0-4f91-9f63-da7a7b5ba87e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtPercentageBearingVariableInterestAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_cd9485a1-5ae7-4ce8-a15f-0641a9caa570" xlink:to="loc_us-gaap_LongtermDebtPercentageBearingVariableInterestAmount_f6f1cce6-66a0-4f91-9f63-da7a7b5ba87e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtPercentageBearingFixedInterestAmount_ce1f4594-28b6-46f6-875b-8f293990f84d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtPercentageBearingFixedInterestAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_cd9485a1-5ae7-4ce8-a15f-0641a9caa570" xlink:to="loc_us-gaap_LongtermDebtPercentageBearingFixedInterestAmount_ce1f4594-28b6-46f6-875b-8f293990f84d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/DerivativesandFinancialInstrumentsAssetsandLiabilitiesMeasuredatFairValueDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#DerivativesandFinancialInstrumentsAssetsandLiabilitiesMeasuredatFairValueDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/DerivativesandFinancialInstrumentsAssetsandLiabilitiesMeasuredatFairValueDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueNetAssetLiability_a024c146-24b0-4f05-b9de-981b0f79e83a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueNetAssetLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_7aabf352-6b85-4587-9aa0-167767bb1f6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueNetAssetLiability_a024c146-24b0-4f05-b9de-981b0f79e83a" xlink:to="loc_us-gaap_DerivativeAssets_7aabf352-6b85-4587-9aa0-167767bb1f6f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_DeferredCompensationPlanAssetsFairValueDisclosure_33c94d0a-5d5e-4650-a080-070fad146b7e" xlink:href="pnr-20251231.xsd#pnr_DeferredCompensationPlanAssetsFairValueDisclosure"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueNetAssetLiability_a024c146-24b0-4f05-b9de-981b0f79e83a" xlink:to="loc_pnr_DeferredCompensationPlanAssetsFairValueDisclosure_33c94d0a-5d5e-4650-a080-070fad146b7e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_407d1fd4-9965-4f5d-bfc1-a58bd0148d70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyContractAssetFairValueDisclosure"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueNetAssetLiability_a024c146-24b0-4f05-b9de-981b0f79e83a" xlink:to="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_407d1fd4-9965-4f5d-bfc1-a58bd0148d70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_ContingentEarnOutLiabilitiesFairValueDisclosure_1e360536-9c79-4192-90b2-194f186bbe66" xlink:href="pnr-20251231.xsd#pnr_ContingentEarnOutLiabilitiesFairValueDisclosure"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueNetAssetLiability_a024c146-24b0-4f05-b9de-981b0f79e83a" xlink:to="loc_pnr_ContingentEarnOutLiabilitiesFairValueDisclosure_1e360536-9c79-4192-90b2-194f186bbe66" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_962a532b-1d01-4a41-9cac-c2ec183c3a40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueNetAssetLiability_a024c146-24b0-4f05-b9de-981b0f79e83a" xlink:to="loc_us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure_962a532b-1d01-4a41-9cac-c2ec183c3a40" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019c6826-5a33-7202-8fa2-0199f13eae33" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FairValueNetAssetLiability_a024c146-24b0-4f05-b9de-981b0f79e83a" xlink:to="loc_us-gaap_DerivativeLiabilities_019c6826-5a33-7202-8fa2-0199f13eae33" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/IncomeTaxesIncomeLossBeforeIncomeTaxesandNoncontrollingInterestDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#IncomeTaxesIncomeLossBeforeIncomeTaxesandNoncontrollingInterestDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/IncomeTaxesIncomeLossBeforeIncomeTaxesandNoncontrollingInterestDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d8acb2fa-45e9-40a6-92c4-9eee5a76cc10" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_76c6b685-b0da-41fe-92d9-ef4c4c397d26" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d8acb2fa-45e9-40a6-92c4-9eee5a76cc10" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_76c6b685-b0da-41fe-92d9-ef4c4c397d26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_4634f238-59eb-4052-a468-b65965748523" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d8acb2fa-45e9-40a6-92c4-9eee5a76cc10" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_4634f238-59eb-4052-a468-b65965748523" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/IncomeTaxesProvisionforIncomeTaxesDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#IncomeTaxesProvisionforIncomeTaxesDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/IncomeTaxesProvisionforIncomeTaxesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_67986587-5922-44c6-9a42-baab7750e136" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_ada9ee09-742b-4cc6-ae01-87fb40cb1b1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_67986587-5922-44c6-9a42-baab7750e136" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_ada9ee09-742b-4cc6-ae01-87fb40cb1b1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_45acbf09-eabd-476a-9308-9cbdf94263ee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentForeignTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_67986587-5922-44c6-9a42-baab7750e136" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_45acbf09-eabd-476a-9308-9cbdf94263ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_2e2d6be5-8af4-49c7-b19b-c16a489a4279" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_edb34ae2-9750-4ec9-8208-a6b1c50932eb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_2e2d6be5-8af4-49c7-b19b-c16a489a4279" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_edb34ae2-9750-4ec9-8208-a6b1c50932eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_9457a859-7338-4955-aa24-96740661b445" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_dcd8e000-d9a6-4989-b48b-029963b9e620" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_9457a859-7338-4955-aa24-96740661b445" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_dcd8e000-d9a6-4989-b48b-029963b9e620" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_6485dcde-5b59-4a9b-ba39-161b18b6cba4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_9457a859-7338-4955-aa24-96740661b445" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_6485dcde-5b59-4a9b-ba39-161b18b6cba4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/IncomeTaxesReconciliationofFederalStatutoryIncomeTaxRate2025Detail" xlink:type="simple" xlink:href="pnr-20251231.xsd#IncomeTaxesReconciliationofFederalStatutoryIncomeTaxRate2025Detail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/IncomeTaxesReconciliationofFederalStatutoryIncomeTaxRate2025Detail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_019c6838-7c16-7255-97af-c6627107a36a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_019c6838-7c16-7255-97af-c6627107a36a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_019c6838-7c16-7414-82c2-eec436058bb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_019c6838-7c16-7414-82c2-eec436058bb9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationPartnershipImpactsAmount_019c6838-7c16-7d12-832c-b9aee13364ad" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationPartnershipImpactsAmount"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationPartnershipImpactsAmount_019c6838-7c16-7d12-832c-b9aee13364ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_019c6838-7c16-70dd-b3bc-2344fb8e27f2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_019c6838-7c16-70dd-b3bc-2344fb8e27f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount_019c6838-7c16-7d69-bed3-b6c4d39f7f4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount_019c6838-7c16-7d69-bed3-b6c4d39f7f4a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount_019c6838-7c16-75b5-8f88-2f56b292acb7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount_019c6838-7c16-75b5-8f88-2f56b292acb7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_019c6838-7c16-7cc2-b1ae-fc2673430f8c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_019c6838-7c16-7cc2-b1ae-fc2673430f8c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsChangeInPriorYearAmount_019c6838-7c16-7dc5-8def-e19292989af1" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsChangeInPriorYearAmount"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsChangeInPriorYearAmount_019c6838-7c16-7dc5-8def-e19292989af1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationCantonalIncomeTaxesAmount_019c7ccd-93f7-7796-a816-4849290dfef6" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationCantonalIncomeTaxesAmount"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_019c6838-7c16-7f6e-a313-cfa1fcb2bc94" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationCantonalIncomeTaxesAmount_019c7ccd-93f7-7796-a816-4849290dfef6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019c6839-6c50-7799-925b-f71b2c1f2468" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019c6839-6c50-7799-925b-f71b2c1f2468" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_019c6839-6c50-7199-ae0c-cfb32415a7b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_019c6839-6c50-7199-ae0c-cfb32415a7b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationPartnershipImpactsPercent_019c6839-6c50-7574-b0cc-f6876362b1c4" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationPartnershipImpactsPercent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationPartnershipImpactsPercent_019c6839-6c50-7574-b0cc-f6876362b1c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_019c6839-6c50-7ff3-8e91-7f4841a2a3e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_019c6839-6c50-7ff3-8e91-7f4841a2a3e2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherPercent_019c6839-6c50-7ee4-ae6d-3c27ebb1864b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherPercent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderOtherPercent_019c6839-6c50-7ee4-ae6d-3c27ebb1864b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_019c6839-6c50-7b20-834e-764c4905ed45" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_019c6839-6c50-7b20-834e-764c4905ed45" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_019c6839-6c50-7487-a3ba-921a3a681de0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_019c6839-6c50-7487-a3ba-921a3a681de0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsChangeInPriorYearPercent_019c6839-6c50-7710-8ab6-59a1ba8dbb77" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsChangeInPriorYearPercent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsChangeInPriorYearPercent_019c6839-6c50-7710-8ab6-59a1ba8dbb77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationCantonalIncomeTaxesPercent_019c7cce-fea6-7771-9727-ac711739e0d9" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationCantonalIncomeTaxesPercent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c6839-6c50-76da-882e-4b3dc59d3ce1" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationCantonalIncomeTaxesPercent_019c7cce-fea6-7771-9727-ac711739e0d9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/IncomeTaxesReconciliationofFederalStatutoryIncomeTaxRate2024and2023Detail" xlink:type="simple" xlink:href="pnr-20251231.xsd#IncomeTaxesReconciliationofFederalStatutoryIncomeTaxRate2024and2023Detail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/IncomeTaxesReconciliationofFederalStatutoryIncomeTaxRate2024and2023Detail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019c683c-fe26-7118-8d2a-973cf3de2ee0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_019c683c-fe26-7118-8d2a-973cf3de2ee0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_019c683c-fe26-7834-8a56-fda206a3e22c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential_019c683c-fe26-7834-8a56-fda206a3e22c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_019c683c-fe26-7a07-a077-d9bf77c984d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance_019c683c-fe26-7a07-a077-d9bf77c984d8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationWithholdingTaxesPercentage_019c683c-fe26-7ad8-b658-d27a46d60c60" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationWithholdingTaxesPercentage"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationWithholdingTaxesPercentage_019c683c-fe26-7ad8-b658-d27a46d60c60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_019c683c-fe26-7b2b-95e4-ab2d3f2cfb11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_019c683c-fe26-7b2b-95e4-ab2d3f2cfb11" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsPercentage_019c683c-fe26-7f0f-a923-e838c14cc0a7" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsPercentage"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefitsPercentage_019c683c-fe26-7f0f-a923-e838c14cc0a7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationWorthlessStockDeductionPercentage_019c683c-fe26-72cb-b7f4-c2bcb38dda1e" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationWorthlessStockDeductionPercentage"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationWorthlessStockDeductionPercentage_019c683c-fe26-72cb-b7f4-c2bcb38dda1e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_EffectiveIncomeTaxRateReconciliationChangeInTaxBasisInForeignAssets_019c683c-fe26-7b90-a0c8-cb28ae01dce6" xlink:href="pnr-20251231.xsd#pnr_EffectiveIncomeTaxRateReconciliationChangeInTaxBasisInForeignAssets"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_019c683c-fe26-7dbc-8467-8aa95cafafdc" xlink:to="loc_pnr_EffectiveIncomeTaxRateReconciliationChangeInTaxBasisInForeignAssets_019c683c-fe26-7b90-a0c8-cb28ae01dce6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/IncomeTaxesDeferredTaxesDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#IncomeTaxesDeferredTaxesDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/IncomeTaxesDeferredTaxesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_1498ba64-107d-4e3b-bac1-6ff16140c2c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_DeferredIncomeTaxLiabilitiesGross_0495492d-96a2-4c26-8f52-75f02372a7eb" xlink:href="pnr-20251231.xsd#pnr_DeferredIncomeTaxLiabilitiesGross"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_1498ba64-107d-4e3b-bac1-6ff16140c2c4" xlink:to="loc_pnr_DeferredIncomeTaxLiabilitiesGross_0495492d-96a2-4c26-8f52-75f02372a7eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_DeferredIncomeTaxAssetsGross_2c28f5ef-ebe8-44e7-8855-465bd3e34c91" xlink:href="pnr-20251231.xsd#pnr_DeferredIncomeTaxAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_1498ba64-107d-4e3b-bac1-6ff16140c2c4" xlink:to="loc_pnr_DeferredIncomeTaxAssetsGross_2c28f5ef-ebe8-44e7-8855-465bd3e34c91" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#IncomeTaxesDeferredTaxAssetsandLiabilitiesDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_211032ac-6fb9-4115-a47a-5109fc4c4c06" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_f79317ce-9f66-4ce3-bf74-717b4bf10917" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_211032ac-6fb9-4115-a47a-5109fc4c4c06" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_f79317ce-9f66-4ce3-bf74-717b4bf10917" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_e210a790-20a9-473b-a102-ad582fba6b2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_211032ac-6fb9-4115-a47a-5109fc4c4c06" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_e210a790-20a9-473b-a102-ad582fba6b2c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_e8741dc5-ee06-480d-a083-e4c616ad583e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_4efdafa7-3e10-4a73-8152-6a21203bb6b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_e8741dc5-ee06-480d-a083-e4c616ad583e" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities_4efdafa7-3e10-4a73-8152-6a21203bb6b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_b777c152-bbbe-4781-8931-dc1a0aee68bb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_e8741dc5-ee06-480d-a083-e4c616ad583e" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_b777c152-bbbe-4781-8931-dc1a0aee68bb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_07238960-30f1-416d-b88c-8c1d0fc4d308" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_e8741dc5-ee06-480d-a083-e4c616ad583e" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_07238960-30f1-416d-b88c-8c1d0fc4d308" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards_a4503f6f-f96e-4034-8ccd-db890fc47dd0" xlink:href="pnr-20251231.xsd#pnr_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_e8741dc5-ee06-480d-a083-e4c616ad583e" xlink:to="loc_pnr_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards_a4503f6f-f96e-4034-8ccd-db890fc47dd0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_746a329b-c289-4108-802a-d77806026c0f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_e8741dc5-ee06-480d-a083-e4c616ad583e" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_746a329b-c289-4108-802a-d77806026c0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_DeferredTaxAssetTaxDeferredExpenseResearchAndDevelopmentCosts_fac9f897-a9f9-4479-8142-c5612cc1dfc5" xlink:href="pnr-20251231.xsd#pnr_DeferredTaxAssetTaxDeferredExpenseResearchAndDevelopmentCosts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross_e8741dc5-ee06-480d-a083-e4c616ad583e" xlink:to="loc_pnr_DeferredTaxAssetTaxDeferredExpenseResearchAndDevelopmentCosts_fac9f897-a9f9-4479-8142-c5612cc1dfc5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_1b1095d4-c3ad-4b7f-ab83-a15babec6a77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_1e545b35-afc0-4663-a07e-b3abacd24a18" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_1b1095d4-c3ad-4b7f-ab83-a15babec6a77" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_1e545b35-afc0-4663-a07e-b3abacd24a18" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_47a95965-a1e6-4582-ae9b-048a09324a55" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_1b1095d4-c3ad-4b7f-ab83-a15babec6a77" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_47a95965-a1e6-4582-ae9b-048a09324a55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_b28c6bcd-6ec8-4e63-a8bc-ed0edf0d150e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_1906199f-6334-4dab-872e-7aa2aa69ab15" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b28c6bcd-6ec8-4e63-a8bc-ed0edf0d150e" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_1906199f-6334-4dab-872e-7aa2aa69ab15" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets_7d662eb7-b43c-4e91-a7cc-51fd67aec01c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b28c6bcd-6ec8-4e63-a8bc-ed0edf0d150e" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets_7d662eb7-b43c-4e91-a7cc-51fd67aec01c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_7119e50d-56a7-4285-8342-3ad572c44036" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredTaxLiabilitiesOther"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_b28c6bcd-6ec8-4e63-a8bc-ed0edf0d150e" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_7119e50d-56a7-4285-8342-3ad572c44036" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/BenefitPlansObligationsandFundedStatusDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#BenefitPlansObligationsandFundedStatusDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/BenefitPlansObligationsandFundedStatusDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_8dd7d073-f2f3-408b-82ea-64272f9e2a2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_f118ee9f-8a28-4db2-add7-878ee6efdd41" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_8dd7d073-f2f3-408b-82ea-64272f9e2a2d" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_f118ee9f-8a28-4db2-add7-878ee6efdd41" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_80681c5b-6767-4b21-8719-e666753a7f38" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_8dd7d073-f2f3-408b-82ea-64272f9e2a2d" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_80681c5b-6767-4b21-8719-e666753a7f38" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/BenefitPlansAmountsRecordedinConsolidatedBalanceSheetsDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#BenefitPlansAmountsRecordedinConsolidatedBalanceSheetsDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/BenefitPlansAmountsRecordedinConsolidatedBalanceSheetsDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_1a41ed84-c021-43a2-8b71-6866d6a147e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_0d5b44f5-de04-4f8b-967f-080939157ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_1a41ed84-c021-43a2-8b71-6866d6a147e8" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_0d5b44f5-de04-4f8b-967f-080939157ff6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_34d13ec1-7ccd-4559-b035-7330e2feff5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_1a41ed84-c021-43a2-8b71-6866d6a147e8" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_34d13ec1-7ccd-4559-b035-7330e2feff5d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/BenefitPlansComponentsofNetPeriodicBenefitCostDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#BenefitPlansComponentsofNetPeriodicBenefitCostDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/BenefitPlansComponentsofNetPeriodicBenefitCostDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_88b64e34-073f-4272-85a9-a3c0f10c6ba4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_7e0444ea-e51d-4fc5-8915-3017dc9187f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_88b64e34-073f-4272-85a9-a3c0f10c6ba4" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_7e0444ea-e51d-4fc5-8915-3017dc9187f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_237f024a-dca5-4a9d-ac81-f73511ca0ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_88b64e34-073f-4272-85a9-a3c0f10c6ba4" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_237f024a-dca5-4a9d-ac81-f73511ca0ff6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_7029c52b-e345-4a73-a51a-affdb627b3d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_88b64e34-073f-4272-85a9-a3c0f10c6ba4" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_7029c52b-e345-4a73-a51a-affdb627b3d4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_fbf4e445-9442-4c08-88d2-5e628137ab2f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_88b64e34-073f-4272-85a9-a3c0f10c6ba4" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_fbf4e445-9442-4c08-88d2-5e628137ab2f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_0e83aabd-b10b-49db-ad7c-25ccc01d1d73" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_88b64e34-073f-4272-85a9-a3c0f10c6ba4" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_0e83aabd-b10b-49db-ad7c-25ccc01d1d73" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/SegmentInformationReconciliationofIncomefromContinuingOperationsfromSegmentstoConsolidatedDetails" xlink:type="simple" xlink:href="pnr-20251231.xsd#SegmentInformationReconciliationofIncomefromContinuingOperationsfromSegmentstoConsolidatedDetails"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/SegmentInformationReconciliationofIncomefromContinuingOperationsfromSegmentstoConsolidatedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019c6864-0113-7b91-ba82-202d79a627c4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_OperatingIncomeLoss_019c6864-0113-7b91-ba82-202d79a627c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019c6864-0113-76da-8cab-ba06d22d7f62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_RestructuringCharges_019c6864-0113-76da-8cab-ba06d22d7f62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_TransformationCosts_019c6864-0113-7d42-a86b-bc728c9de456" xlink:href="pnr-20251231.xsd#pnr_TransformationCosts"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_pnr_TransformationCosts_019c6864-0113-7d42-a86b-bc728c9de456" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_019c6864-0113-75b9-80ae-e0c0cbb67bd2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_019c6864-0113-75b9-80ae-e0c0cbb67bd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_019c6864-0113-73b9-8f75-7995f7c6d01b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetImpairmentCharges"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_AssetImpairmentCharges_019c6864-0113-73b9-8f75-7995f7c6d01b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_019c6864-0113-7d33-8998-bac4d2702b56" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_019c6864-0113-7d33-8998-bac4d2702b56" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_Dealrelatedcostsandexpenses_019c6864-0113-7b87-a6eb-eca587dba235" xlink:href="pnr-20251231.xsd#pnr_Dealrelatedcostsandexpenses"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_pnr_Dealrelatedcostsandexpenses_019c6864-0113-7b87-a6eb-eca587dba235" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_pnr_LegalSettlementAndAccrualAdjustments_019c6864-0113-772c-b4e9-071666bf7050" xlink:href="pnr-20251231.xsd#pnr_LegalSettlementAndAccrualAdjustments"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_pnr_LegalSettlementAndAccrualAdjustments_019c6864-0113-772c-b4e9-071666bf7050" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019c6864-0113-7c6e-ae5c-04e00cae574d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019c6864-0113-7c6e-ae5c-04e00cae574d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRevenueExpenseNet_019c6864-0113-7ca3-8713-1bd305fd5d98" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestRevenueExpenseNet"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_InterestRevenueExpenseNet_019c6864-0113-7ca3-8713-1bd305fd5d98" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherExpenses_019c6864-0113-78a1-80d5-d5915f962366" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherExpenses"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019c6864-0113-7c74-9952-c3a94c6a2dd3" xlink:to="loc_us-gaap_OtherExpenses_019c6864-0113-78a1-80d5-d5915f962366" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/CommitmentsandContingenciesComponentsofLeaseCostSupplementalCashFlowandOtherInformationRelatedtoLeasesDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#CommitmentsandContingenciesComponentsofLeaseCostSupplementalCashFlowandOtherInformationRelatedtoLeasesDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/CommitmentsandContingenciesComponentsofLeaseCostSupplementalCashFlowandOtherInformationRelatedtoLeasesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_ee489929-ca47-4023-bb20-e9c847a16efe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_790eabad-5415-4e77-afc5-04fa723a46fb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_ee489929-ca47-4023-bb20-e9c847a16efe" xlink:to="loc_us-gaap_OperatingLeaseCost_790eabad-5415-4e77-afc5-04fa723a46fb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubleaseIncome_661efa3b-20c0-408a-98b3-68c2f89cccc6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubleaseIncome"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_ee489929-ca47-4023-bb20-e9c847a16efe" xlink:to="loc_us-gaap_SubleaseIncome_661efa3b-20c0-408a-98b3-68c2f89cccc6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/CommitmentsandContingenciesFutureMinimumLeaseCommitmentsUnderNoncancelableOperatingLeasesDetail" xlink:type="simple" xlink:href="pnr-20251231.xsd#CommitmentsandContingenciesFutureMinimumLeaseCommitmentsUnderNoncancelableOperatingLeasesDetail"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/CommitmentsandContingenciesFutureMinimumLeaseCommitmentsUnderNoncancelableOperatingLeasesDetail" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ad169ae-b292-42b3-9c72-9876d905aa40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_ca47ae61-051f-4ee0-a952-8b4a1dbbca90" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ad169ae-b292-42b3-9c72-9876d905aa40" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_ca47ae61-051f-4ee0-a952-8b4a1dbbca90" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_4d1a15be-b946-4cc4-979d-ef40dba2724e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7ad169ae-b292-42b3-9c72-9876d905aa40" xlink:to="loc_us-gaap_OperatingLeaseLiability_4d1a15be-b946-4cc4-979d-ef40dba2724e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.pentair.com/role/CommitmentsandContingenciesFutureMinimumLeaseCommitmentsUnderNoncancelableOperatingLeasesDetail_1" xlink:type="simple" xlink:href="pnr-20251231.xsd#CommitmentsandContingenciesFutureMinimumLeaseCommitmentsUnderNoncancelableOperatingLeasesDetail_1"/>
  <link:calculationLink xlink:role="http://www.pentair.com/role/CommitmentsandContingenciesFutureMinimumLeaseCommitmentsUnderNoncancelableOperatingLeasesDetail_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6bd66be1-7e71-4bf1-801f-6b100268fd40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_27da2060-5b7d-443c-9012-9ff85809df48" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6bd66be1-7e71-4bf1-801f-6b100268fd40" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_27da2060-5b7d-443c-9012-9ff85809df48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_cf4e4c89-6900-4ce5-85b7-14fd97c13bdd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6bd66be1-7e71-4bf1-801f-6b100268fd40" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_cf4e4c89-6900-4ce5-85b7-14fd97c13bdd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_78f2f3e7-68a5-4736-871a-a58bc481479f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6bd66be1-7e71-4bf1-801f-6b100268fd40" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_78f2f3e7-68a5-4736-871a-a58bc481479f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_3dd4d62e-a92a-4069-bdcf-8344c9de2877" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6bd66be1-7e71-4bf1-801f-6b100268fd40" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_3dd4d62e-a92a-4069-bdcf-8344c9de2877" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_92442f49-771c-48b1-806d-abd75a8bfec5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6bd66be1-7e71-4bf1-801f-6b100268fd40" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_92442f49-771c-48b1-806d-abd75a8bfec5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4f9933e9-34c8-4438-ba46-da48ff0d5522" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_6bd66be1-7e71-4bf1-801f-6b100268fd40" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_4f9933e9-34c8-4438-ba46-da48ff0d5522" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
