Excel LOG10 Function

Using the Excel LOG10 Function


The LOG10 function returns the base-10 logarithm of a user provided number. Use the LOG function if you would like to specify the base.


=LOG10 (number)

Syntax Breakdown

Required. The number for which you want to find the base-10 logarithm. Number must be a positive real number.

Usage Notes

The LOG10 function is used to find the base-10 logarithm of a positive real number.

LOG10 Errors
The number argument in the LOG10 function must be a positive, non-zero number. If the number argument is either zero (0) or negative, the function will return the #NUM! error.

Excel LOG10 NUM Error