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title: Create Custom Fields with Calculations
collection: tableau
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locale: en-us
portal_url: https://docs.salesforce.com/tableau/current/en-us/pro/desktop/calculations_calculatedfields.md
canonical_url: https://help.tableau.com/current/pro/desktop/en-us/calculations_calculatedfields.htm
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description: Create calculated fields to add new data to your source and save them for analysis.
---
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# Create Custom Fields with Calculations

If your underlying data doesn't include all of the fields you need to answer your questions, you can create new fields in Tableau using calculations and then save them as part of your data source. These fields are called calculated fields.

This section provides all the documentation you need to get started with calculations in Tableau.

  

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