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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:12f5a4cd-064e-45cc-838c-923e959081a7,g:548a8a86-3840-4ab4-87e1-267edb77e3b3-->
<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.westlake.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="wlkp-20231231.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_90287010-a697-4664-b7fc-c4707891861b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_56274d17-5821-4439-9f17-b74744c6e596" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_90287010-a697-4664-b7fc-c4707891861b" xlink:to="loc_us-gaap_Liabilities_56274d17-5821-4439-9f17-b74744c6e596" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_889f22eb-9a23-4617-963c-dfca8847419e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_90287010-a697-4664-b7fc-c4707891861b" xlink:to="loc_us-gaap_CommitmentsAndContingencies_889f22eb-9a23-4617-963c-dfca8847419e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_f948ba1c-28a7-4b82-a606-bcbe88968b09" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_90287010-a697-4664-b7fc-c4707891861b" xlink:to="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_f948ba1c-28a7-4b82-a606-bcbe88968b09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PartnersCapital_7836694e-bb27-4c32-9254-66ff5934602a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PartnersCapital"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LimitedPartnersCapitalAccount_dd1662fd-dedc-4069-9004-65ce50c47648" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LimitedPartnersCapitalAccount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapital_7836694e-bb27-4c32-9254-66ff5934602a" xlink:to="loc_us-gaap_LimitedPartnersCapitalAccount_dd1662fd-dedc-4069-9004-65ce50c47648" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralPartnersCapitalAccount_d2ab0771-6045-4f9d-823a-fc496db3bcec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeneralPartnersCapitalAccount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapital_7836694e-bb27-4c32-9254-66ff5934602a" xlink:to="loc_us-gaap_GeneralPartnersCapitalAccount_d2ab0771-6045-4f9d-823a-fc496db3bcec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_ecb81e48-a0c0-44b9-ac75-330695141aad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_bb08a4a4-b216-4450-8b53-8c988c5c0bd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ecb81e48-a0c0-44b9-ac75-330695141aad" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_bb08a4a4-b216-4450-8b53-8c988c5c0bd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCostsAndOtherAssets_542d502c-ff59-4ba6-af22-3fddb5743e7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredCostsAndOtherAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ecb81e48-a0c0-44b9-ac75-330695141aad" xlink:to="loc_us-gaap_DeferredCostsAndOtherAssets_542d502c-ff59-4ba6-af22-3fddb5743e7c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_2ea3cd26-133c-479b-8811-86e138dcda84" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ecb81e48-a0c0-44b9-ac75-330695141aad" xlink:to="loc_us-gaap_AssetsCurrent_2ea3cd26-133c-479b-8811-86e138dcda84" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_1f0de8e8-2a1c-4ef6-8bd0-215343dde66e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_ecb81e48-a0c0-44b9-ac75-330695141aad" xlink:to="loc_us-gaap_Goodwill_1f0de8e8-2a1c-4ef6-8bd0-215343dde66e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_59a65e8a-a024-4d7c-9623-0b5c99850524" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_c880ea56-068a-4e44-a206-a07094ebac8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_59a65e8a-a024-4d7c-9623-0b5c99850524" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_c880ea56-068a-4e44-a206-a07094ebac8b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_7216b02e-5fcd-4940-8b15-37cc46079e14" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_59a65e8a-a024-4d7c-9623-0b5c99850524" xlink:to="loc_us-gaap_AccountsPayableCurrent_7216b02e-5fcd-4940-8b15-37cc46079e14" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_54f8cdbe-0d6c-49c8-988f-7dbf7ccf5cdd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_7ba8df96-12fc-481d-85dc-bd4262e5aec6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_54f8cdbe-0d6c-49c8-988f-7dbf7ccf5cdd" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_7ba8df96-12fc-481d-85dc-bd4262e5aec6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_b2dc40d1-fa2a-445b-8f34-49d0fd1a95f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReceivablesNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_54f8cdbe-0d6c-49c8-988f-7dbf7ccf5cdd" xlink:to="loc_us-gaap_ReceivablesNetCurrent_b2dc40d1-fa2a-445b-8f34-49d0fd1a95f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_ReceivablesunderInvestmentManagementAgreementswithRelatedPartiesCurrent_3d35cf8b-5633-4027-b642-efce6d7d1331" xlink:href="wlkp-20231231.xsd#wlkp_ReceivablesunderInvestmentManagementAgreementswithRelatedPartiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_54f8cdbe-0d6c-49c8-988f-7dbf7ccf5cdd" xlink:to="loc_wlkp_ReceivablesunderInvestmentManagementAgreementswithRelatedPartiesCurrent_3d35cf8b-5633-4027-b642-efce6d7d1331" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5832242a-f020-4df7-8b79-d3b1174290ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_54f8cdbe-0d6c-49c8-988f-7dbf7ccf5cdd" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5832242a-f020-4df7-8b79-d3b1174290ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_4b025b82-f95f-4ff6-8d1f-f2706e015075" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_54f8cdbe-0d6c-49c8-988f-7dbf7ccf5cdd" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_4b025b82-f95f-4ff6-8d1f-f2706e015075" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_5f40a750-c65d-4713-ac56-0b210c1fb429" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_54f8cdbe-0d6c-49c8-988f-7dbf7ccf5cdd" xlink:to="loc_us-gaap_InventoryNet_5f40a750-c65d-4713-ac56-0b210c1fb429" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_c808cead-86ab-457f-9996-fadf95300483" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_5e22554d-c504-4250-8d58-6870ea993914" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_c808cead-86ab-457f-9996-fadf95300483" xlink:to="loc_us-gaap_LiabilitiesCurrent_5e22554d-c504-4250-8d58-6870ea993914" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermDebtNoncurrent_93f9ec2d-f1c0-4690-ba2a-f1de37611f64" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_c808cead-86ab-457f-9996-fadf95300483" xlink:to="loc_us-gaap_OtherLongTermDebtNoncurrent_93f9ec2d-f1c0-4690-ba2a-f1de37611f64" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_3856dc5a-a61c-47f6-861d-1f14ad8198eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_c808cead-86ab-457f-9996-fadf95300483" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_3856dc5a-a61c-47f6-861d-1f14ad8198eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_6d61cd70-3681-4fac-8592-0245f99d43a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_c808cead-86ab-457f-9996-fadf95300483" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_6d61cd70-3681-4fac-8592-0245f99d43a3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_3dbb5054-67ff-4184-9807-24d0788ace84" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestInLimitedPartnerships_95d6e18a-e198-45a3-bfb6-0573d52f19f0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MinorityInterestInLimitedPartnerships"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_3dbb5054-67ff-4184-9807-24d0788ace84" xlink:to="loc_us-gaap_MinorityInterestInLimitedPartnerships_95d6e18a-e198-45a3-bfb6-0573d52f19f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PartnersCapital_28dc0ae4-10d8-4891-aa9e-6c87cb5c4596" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PartnersCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_3dbb5054-67ff-4184-9807-24d0788ace84" xlink:to="loc_us-gaap_PartnersCapital_28dc0ae4-10d8-4891-aa9e-6c87cb5c4596" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/ConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="wlkp-20231231.xsd#ConsolidatedStatementsofOperations"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/ConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_8fd9b425-b4ef-4b1a-b4c7-88790707b0f3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_d76a846c-c8e6-48df-9854-1d8043c8f691" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_8fd9b425-b4ef-4b1a-b4c7-88790707b0f3" xlink:to="loc_us-gaap_GrossProfit_d76a846c-c8e6-48df-9854-1d8043c8f691" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_2d25d83a-6b69-42dd-a98d-c717c601cf1a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_8fd9b425-b4ef-4b1a-b4c7-88790707b0f3" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_2d25d83a-6b69-42dd-a98d-c717c601cf1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_103ddd2e-d100-4370-81bd-1a9de7555cc4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_2ae52362-7a64-4685-80c6-fd3efc2a0ca7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_103ddd2e-d100-4370-81bd-1a9de7555cc4" xlink:to="loc_us-gaap_OperatingIncomeLoss_2ae52362-7a64-4685-80c6-fd3efc2a0ca7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_57a460e7-04d5-4797-9d08-dc7f25a1406e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_103ddd2e-d100-4370-81bd-1a9de7555cc4" xlink:to="loc_us-gaap_InterestExpense_57a460e7-04d5-4797-9d08-dc7f25a1406e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_199b58ef-fe4d-4845-84f6-684ae7d0ee8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_103ddd2e-d100-4370-81bd-1a9de7555cc4" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_199b58ef-fe4d-4845-84f6-684ae7d0ee8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_18d77e80-7000-4f8b-a447-25341e58e594" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_bd947d67-e0d6-406d-8732-df354784dd57" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_18d77e80-7000-4f8b-a447-25341e58e594" xlink:to="loc_us-gaap_ProfitLoss_bd947d67-e0d6-406d-8732-df354784dd57" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_139027f5-57aa-455b-b81f-8e0de3011028" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_18d77e80-7000-4f8b-a447-25341e58e594" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_139027f5-57aa-455b-b81f-8e0de3011028" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_f65f15ed-fd86-4587-a88a-224693068241" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_098a1515-2599-4259-9364-2e7a273ce231" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_ProfitLoss_f65f15ed-fd86-4587-a88a-224693068241" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_098a1515-2599-4259-9364-2e7a273ce231" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_dc7bb425-3ba1-401f-bfd8-47188c771b23" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_ProfitLoss_f65f15ed-fd86-4587-a88a-224693068241" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_dc7bb425-3ba1-401f-bfd8-47188c771b23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_26b9ab03-b0d7-4497-a73b-9c1d08e36d2b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_09940e06-6d45-40e9-9831-2d4bc8fb3f1e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_Revenues_26b9ab03-b0d7-4497-a73b-9c1d08e36d2b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_09940e06-6d45-40e9-9831-2d4bc8fb3f1e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_b95bcb5f-f2d3-4625-a354-a10cb52e98db" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_e1973833-316a-4aa3-a737-e4c4c57dc6e3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_b95bcb5f-f2d3-4625-a354-a10cb52e98db" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_e1973833-316a-4aa3-a737-e4c4c57dc6e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_bd19d95d-db32-48fc-a15b-412d7ebb6f06" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_b95bcb5f-f2d3-4625-a354-a10cb52e98db" xlink:to="loc_us-gaap_Revenues_bd19d95d-db32-48fc-a15b-412d7ebb6f06" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="wlkp-20231231.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30b2910e-eb27-4fb5-bb3f-577953d06ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_InvestmentswithWestlakeundertheInvestmentManagementAgreement_46ea9c75-85a5-469f-9962-88f70d392868" xlink:href="wlkp-20231231.xsd#wlkp_InvestmentswithWestlakeundertheInvestmentManagementAgreement"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30b2910e-eb27-4fb5-bb3f-577953d06ee6" xlink:to="loc_wlkp_InvestmentswithWestlakeundertheInvestmentManagementAgreement_46ea9c75-85a5-469f-9962-88f70d392868" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_5365b8ca-dfbc-4ec3-ad52-e5631cf83064" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30b2910e-eb27-4fb5-bb3f-577953d06ee6" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_5365b8ca-dfbc-4ec3-ad52-e5631cf83064" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_2cf06712-39fb-4216-becd-ba137ef9fe55" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30b2910e-eb27-4fb5-bb3f-577953d06ee6" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_2cf06712-39fb-4216-becd-ba137ef9fe55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_MaturitiesofinvestmentswithWestlakeundertheInvestmentManagementAgreement_23d80bc7-3857-4886-94cf-8c692497df7d" xlink:href="wlkp-20231231.xsd#wlkp_MaturitiesofinvestmentswithWestlakeundertheInvestmentManagementAgreement"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_30b2910e-eb27-4fb5-bb3f-577953d06ee6" xlink:to="loc_wlkp_MaturitiesofinvestmentswithWestlakeundertheInvestmentManagementAgreement_23d80bc7-3857-4886-94cf-8c692497df7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_8bbb6145-26f6-43a5-9336-60a1eb921d18" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4cc72fea-12d4-4040-8235-eda755699018" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_8bbb6145-26f6-43a5-9336-60a1eb921d18" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_4cc72fea-12d4-4040-8235-eda755699018" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_08499d53-77b0-49f8-95b5-3fe78b1215a9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_8bbb6145-26f6-43a5-9336-60a1eb921d18" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_08499d53-77b0-49f8-95b5-3fe78b1215a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7afb7bc1-d283-4544-b7b6-15805e25afbb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_8bbb6145-26f6-43a5-9336-60a1eb921d18" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_7afb7bc1-d283-4544-b7b6-15805e25afbb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_faced661-3bb1-44b9-86f9-7cfd3d4ff002" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DistributionMadeToLimitedPartnerCashDistributionsPaid_d14f026f-421c-4337-8440-b3b890452273" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DistributionMadeToLimitedPartnerCashDistributionsPaid"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_faced661-3bb1-44b9-86f9-7cfd3d4ff002" xlink:to="loc_us-gaap_DistributionMadeToLimitedPartnerCashDistributionsPaid_d14f026f-421c-4337-8440-b3b890452273" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsMinorityInterest_e94d720a-8ad7-42ea-b080-3ac73fc65a1a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfDividendsMinorityInterest"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_faced661-3bb1-44b9-86f9-7cfd3d4ff002" xlink:to="loc_us-gaap_PaymentsOfDividendsMinorityInterest_e94d720a-8ad7-42ea-b080-3ac73fc65a1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromRelatedPartyDebt_16c8fbec-eb21-4295-a900-e982e9a598d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromRelatedPartyDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_faced661-3bb1-44b9-86f9-7cfd3d4ff002" xlink:to="loc_us-gaap_ProceedsFromRelatedPartyDebt_16c8fbec-eb21-4295-a900-e982e9a598d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfRelatedPartyDebt_91bceb6a-8d74-4588-9993-eb071b710659" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfRelatedPartyDebt"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_faced661-3bb1-44b9-86f9-7cfd3d4ff002" xlink:to="loc_us-gaap_RepaymentsOfRelatedPartyDebt_91bceb6a-8d74-4588-9993-eb071b710659" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_df55cfa7-b0d5-4a4b-b070-4051e4829294" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_ProfitLoss_df55cfa7-b0d5-4a4b-b070-4051e4829294" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_7c4b72a4-7a39-48d8-bbad-7d71ebb93010" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_7c4b72a4-7a39-48d8-bbad-7d71ebb93010" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets_946d68c0-f997-49ec-bc33-9e78aba8639a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnDispositionOfAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets_946d68c0-f997-49ec-bc33-9e78aba8639a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_6ffa38d4-8847-4f93-bc91-5bda4b8074a9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_6ffa38d4-8847-4f93-bc91-5bda4b8074a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_d37e5b5c-7010-481b-9f72-00047a2dace1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_d37e5b5c-7010-481b-9f72-00047a2dace1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties_8fe744f7-3986-4ef5-a4e2-458e5b80dbf0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties_8fe744f7-3986-4ef5-a4e2-458e5b80dbf0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_157ee2da-7099-4aa7-86db-7e24612c298b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_157ee2da-7099-4aa7-86db-7e24612c298b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_c5353982-5cbf-4414-948a-fe312804042d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_c5353982-5cbf-4414-948a-fe312804042d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_6292137e-dc5e-4037-bcbb-e58de23b0cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_6292137e-dc5e-4037-bcbb-e58de23b0cb4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_1f94104d-f0df-4fc8-a34a-e384e3836046" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_1f94104d-f0df-4fc8-a34a-e384e3836046" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_320cd550-096a-4e76-8080-e0388b5eec35" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_d0598d17-b381-4bfd-abbd-c7cf384f5c74" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_320cd550-096a-4e76-8080-e0388b5eec35" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/AccountsReceivableThirdPartiesScheduleOfAccountsReceivableDetails" xlink:type="simple" xlink:href="wlkp-20231231.xsd#AccountsReceivableThirdPartiesScheduleOfAccountsReceivableDetails"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/AccountsReceivableThirdPartiesScheduleOfAccountsReceivableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_fcca40a2-ce1c-432a-8a84-32c3dc1836bf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReceivablesNetCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_53aace1d-cc8c-4be5-90f0-b32196ae5fba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivablesNetCurrent_fcca40a2-ce1c-432a-8a84-32c3dc1836bf" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_53aace1d-cc8c-4be5-90f0-b32196ae5fba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_34d4e9a4-8d52-407c-8889-daf492ae6b8d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivablesNetCurrent_fcca40a2-ce1c-432a-8a84-32c3dc1836bf" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_34d4e9a4-8d52-407c-8889-daf492ae6b8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NontradeReceivablesCurrent_0654be66-c371-421c-b21f-94ea6ec34cf1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NontradeReceivablesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ReceivablesNetCurrent_fcca40a2-ce1c-432a-8a84-32c3dc1836bf" xlink:to="loc_us-gaap_NontradeReceivablesCurrent_0654be66-c371-421c-b21f-94ea6ec34cf1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/InventoriesScheduleOfInventoryDetails" xlink:type="simple" xlink:href="wlkp-20231231.xsd#InventoriesScheduleOfInventoryDetails"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/InventoriesScheduleOfInventoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_285d2306-c1b2-4358-b2ad-cb559f24baf5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoods_ca19f6fd-c61c-4fd5-b113-30df799df785" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryFinishedGoods"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_285d2306-c1b2-4358-b2ad-cb559f24baf5" xlink:to="loc_us-gaap_InventoryFinishedGoods_ca19f6fd-c61c-4fd5-b113-30df799df785" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessAndRawMaterials_625e2832-1c91-45f4-84ea-91c0169fda37" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWorkInProcessAndRawMaterials"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_285d2306-c1b2-4358-b2ad-cb559f24baf5" xlink:to="loc_us-gaap_InventoryWorkInProcessAndRawMaterials_625e2832-1c91-45f4-84ea-91c0169fda37" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/PropertyPlantandEquipmentScheduleOfPropertyPlantAndEquipmentDetails" xlink:type="simple" xlink:href="wlkp-20231231.xsd#PropertyPlantandEquipmentScheduleOfPropertyPlantAndEquipmentDetails"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/PropertyPlantandEquipmentScheduleOfPropertyPlantAndEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress_b714602a-c7aa-4013-ad30-a580714c3efc" xlink:href="wlkp-20231231.xsd#wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingsAndImprovementsGross_56445197-ee4d-46c3-a99c-1cea7eaebcd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BuildingsAndImprovementsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress_b714602a-c7aa-4013-ad30-a580714c3efc" xlink:to="loc_us-gaap_BuildingsAndImprovementsGross_56445197-ee4d-46c3-a99c-1cea7eaebcd2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentGross_c35376e2-07a8-4a6b-8993-d7422524fef8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MachineryAndEquipmentGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress_b714602a-c7aa-4013-ad30-a580714c3efc" xlink:to="loc_us-gaap_MachineryAndEquipmentGross_c35376e2-07a8-4a6b-8993-d7422524fef8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentOther_beef4a8f-bb5e-435c-9f2c-5688ad49dda7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentOther"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress_b714602a-c7aa-4013-ad30-a580714c3efc" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentOther_beef4a8f-bb5e-435c-9f2c-5688ad49dda7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_PropertyPlantAndEquipmentNetExcludingConstructionInProgress_d25fcd57-62b7-4bac-80f6-7d4b70ae6698" xlink:href="wlkp-20231231.xsd#wlkp_PropertyPlantAndEquipmentNetExcludingConstructionInProgress"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_aaa60c68-42c7-472b-b307-53690c8380f4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_wlkp_PropertyPlantAndEquipmentNetExcludingConstructionInProgress_d25fcd57-62b7-4bac-80f6-7d4b70ae6698" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_aaa60c68-42c7-472b-b307-53690c8380f4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress_b5cbc92e-9938-4a65-9da7-b63192b72bdf" xlink:href="wlkp-20231231.xsd#wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_wlkp_PropertyPlantAndEquipmentNetExcludingConstructionInProgress_d25fcd57-62b7-4bac-80f6-7d4b70ae6698" xlink:to="loc_wlkp_PropertyPlantAndEquipmentGrossExcludingConstructionInProgress_b5cbc92e-9938-4a65-9da7-b63192b72bdf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_646ccb50-d60e-442a-ae39-a5a50811c6a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressGross_10313bda-e63c-4789-b216-a820b6a71808" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConstructionInProgressGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_646ccb50-d60e-442a-ae39-a5a50811c6a3" xlink:to="loc_us-gaap_ConstructionInProgressGross_10313bda-e63c-4789-b216-a820b6a71808" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_PropertyPlantAndEquipmentNetExcludingConstructionInProgress_cce251e3-a79e-4b85-a9c4-81161b32c4b1" xlink:href="wlkp-20231231.xsd#wlkp_PropertyPlantAndEquipmentNetExcludingConstructionInProgress"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_646ccb50-d60e-442a-ae39-a5a50811c6a3" xlink:to="loc_wlkp_PropertyPlantAndEquipmentNetExcludingConstructionInProgress_cce251e3-a79e-4b85-a9c4-81161b32c4b1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/DeferredChargesandOtherAssetsScheduleOfIntangibleandOtherAssetsDetails" xlink:type="simple" xlink:href="wlkp-20231231.xsd#DeferredChargesandOtherAssetsScheduleOfIntangibleandOtherAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/DeferredChargesandOtherAssetsScheduleOfIntangibleandOtherAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCostsAndOtherAssets_e1d0010d-0287-48f0-a91a-5299f21219f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredCostsAndOtherAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_TurnaroundCostsNet_c314ec42-df3b-4bd2-8994-9ae9c2fd52e6" xlink:href="wlkp-20231231.xsd#wlkp_TurnaroundCostsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredCostsAndOtherAssets_e1d0010d-0287-48f0-a91a-5299f21219f1" xlink:to="loc_wlkp_TurnaroundCostsNet_c314ec42-df3b-4bd2-8994-9ae9c2fd52e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlkp_NoncurrentAssetsOtherNet_204f30d2-27c9-438f-b505-dd38c255ce0e" xlink:href="wlkp-20231231.xsd#wlkp_NoncurrentAssetsOtherNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredCostsAndOtherAssets_e1d0010d-0287-48f0-a91a-5299f21219f1" xlink:to="loc_wlkp_NoncurrentAssetsOtherNet_204f30d2-27c9-438f-b505-dd38c255ce0e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/IncomeTaxesScheduleOfTheProvisionForBenefitFromIncomeTaxesDetails" xlink:type="simple" xlink:href="wlkp-20231231.xsd#IncomeTaxesScheduleOfTheProvisionForBenefitFromIncomeTaxesDetails"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/IncomeTaxesScheduleOfTheProvisionForBenefitFromIncomeTaxesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_cd15d9ce-9516-45fc-8dc6-2dc183783025" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_c3c03cd3-66ee-4038-be83-27913bbbf796" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_cd15d9ce-9516-45fc-8dc6-2dc183783025" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_c3c03cd3-66ee-4038-be83-27913bbbf796" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_a2f5f0e4-7995-4b29-ad91-778d382dfc3f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_cd15d9ce-9516-45fc-8dc6-2dc183783025" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_a2f5f0e4-7995-4b29-ad91-778d382dfc3f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/IncomeTaxesReconciliationOfTaxesComputedAtTheStatutoryRateToIncomeTaxExpenseDetails" xlink:type="simple" xlink:href="wlkp-20231231.xsd#IncomeTaxesReconciliationOfTaxesComputedAtTheStatutoryRateToIncomeTaxExpenseDetails"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/IncomeTaxesReconciliationOfTaxesComputedAtTheStatutoryRateToIncomeTaxExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_e6fcc18e-70db-434b-96cf-60b73a6abd2a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_ac524ef9-f60f-42f3-a05a-fae5c94249af" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_e6fcc18e-70db-434b-96cf-60b73a6abd2a" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_ac524ef9-f60f-42f3-a05a-fae5c94249af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_4379017c-b1b1-468d-a4f1-bc0269b4c018" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_e6fcc18e-70db-434b-96cf-60b73a6abd2a" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_4379017c-b1b1-468d-a4f1-bc0269b4c018" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome_4acfef0a-56cd-406f-9972-b263ea2ab315" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxReconciliationTaxExemptIncome"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_e6fcc18e-70db-434b-96cf-60b73a6abd2a" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome_4acfef0a-56cd-406f-9972-b263ea2ab315" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="simple" xlink:href="wlkp-20231231.xsd#IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_f22f39e6-8396-4ec0-87b2-64fb6da46059" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_115602bc-cb7d-43f2-9c96-e20e5b648575" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_f22f39e6-8396-4ec0-87b2-64fb6da46059" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_115602bc-cb7d-43f2-9c96-e20e5b648575" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.westlake.com/role/IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails_1" xlink:type="simple" xlink:href="wlkp-20231231.xsd#IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails_1"/>
  <link:calculationLink xlink:role="http://www.westlake.com/role/IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_6f96d629-3610-44d6-957a-449cf4ecdb09" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_8b25c736-b82c-4109-b834-e77e84781215" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.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_DeferredTaxLiabilities_6f96d629-3610-44d6-957a-449cf4ecdb09" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_8b25c736-b82c-4109-b834-e77e84781215" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts_dfe2e57d-ffc3-414d-80bf-077d7eb7640f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_6f96d629-3610-44d6-957a-449cf4ecdb09" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts_dfe2e57d-ffc3-414d-80bf-077d7eb7640f" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
