Author: Oscar Cronquist Article last updated on November 02, 2018

The LOG10 function calculates the logarithm of a number using the base 10.

Formula in cell C3:


Excel Function Syntax



number Required. A value larger than 0 (zero) that you want to calculate the logarithm with base 10.


The LOG10 function returns #NUM! error if number is equal to 0 (zero) or smaller.