LOG

LOG is a DAX function that returns the logarithm of a number to a specified base.

Syntax

LOG(
   Number,
   Base
)

Argument	Properties	Description
Number		The positive number for which you want the logarithm.
Base	Optional	The base of the logarithm; if omitted, 10.

Return Values

A decimal number.

Remarks

You might receive an error if the value is too large to be displayed.

The function LOG10 is similar, but always returns the common logarithm, meaning the logarithm for the base 10.

The following formulas return the same result, 2.

= LOG(100,10)
= LOG(100)
= LOG10(100)

Related functions

Other functions related to LOG are:

• AND
• COALESCE
• FALSE
• LOG10
• NOT
• OR
• TRUE

Contribute » | Contributors: Rick de Groot
Microsoft documentation: https://learn.microsoft.com/en-us/dax/log-function-dax