DAX user-defined functions (UDFs)

Concept

DAX user-defined functions let modelers package DAX logic once and reuse it like a built-in function in measures, calculated columns and other functions.

Title graphic: DAX user-defined functions (UDFs) (Concept)

Type	Concept
Documentation	learn.microsoft.com/en-us/dax/best-practices/dax-user-defined-functions

Articles about DAX user-defined functions (UDFs) (1)

Demystifying DAX UDFs: VAL vs. EXPR Explained
2026-08-28 · Mirko Peters
Welcome back to the podcast companion blog! In our latest episode, we took a deep dive into the powerful world of DAX User-Defined Functions (UDFs). If you have bee…

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Sources

Documentation: learn.microsoft.com/en-us/dax/best-practices/dax-user-defined-functions
Feed for this topic (RSS): entity/dax-user-defined-functions/feed.xml
Articles on this topic: 1

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-03