Author: Oscar Cronquist Article last updated on April 18, 2018

The LOG function calculates the logarithm of a number to a specific base.

Formula in cell C3:

=LOG(10)

Excel Function Syntax

LOG(number, [base])

Arguments

number Required. The positive numerical value for which you want the logarithm.
[base] Optional. The base of the logarithm. Default value is 10.