LOG DAX Function (Math and Trig)

Returns the logarithm of a number to the base you specify.

Syntax

LOG ( <Number> [, <Base>] )
Parameter Attributes Description
Number

The positive number for which you want the logarithm.

Base Optional

The base of the logarithm; if omitted, 10.

Return values

Scalar A single decimal value.

Logarithm of number to the base specified.

Remarks

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

Related functions

Other related functions are:

Last update: Dec 1, 2018   » Contribute   » Show contributors

Contributors: Alberto Ferrari, Marco Russo

MSDN documentation: https://msdn.microsoft.com/en-us/query-bi/dax/log-function-dax

DAX Conventions
Context Transition

This function performs a Context Transition if called in a Row Context. Click to read more.

Row Context

This expression is executed in a Row Context. Click to read more.

Iterator

Not recommended

The use of this function is not recommended. See Remarks and Related functions for alternatives.

Not recommended

The use of this parameter is not recommended.

Deprecated

This function is deprecated. Jump to the Alternatives section to see the function to use.

Deprecated

This parameter is deprecated and its use is not recommended.

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