DAX Function Guide

LOG
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Sam McKay

CEO & Founder

How does the LOG work?
The LOG function (DAX) returns a number’s logarithm to the base you determine.
LOG Formula Syntax

LOG(
     <number>,<base>
)

How do you use the LOG?

The DAX function LOG10 is similar, but the common logarithm, i.e. the base 10 logarithm, always returns.

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Considerations when using the LOG?

If the return value is too large for display, you may receive an error.

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Formula examples using the LOG

= LOG (5,10) returns 0.698970004336019.

= LOG (5) returns 0.698970004336019.

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