# Excel LOG10 Function

Summary

The Excel LOG10 function returns the base 10 logarithm of a number. For example, LOG10(100) returns 2, and LOG10(1000) returns 3.

Purpose

Get the base-10 logarithm of a number

Return value

The logarithm

Syntax

=LOG10 (number)

Arguments

**number**- Number for which you want the logarithm.

Usage notes

## Excel Formula Training

Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX & MATCH, count and sum with criteria, dynamically rank values, and create dynamic ranges. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. See details here.