LOG10 Function in Excel: Syntax, Examples and Free Practice

By Rinkesh Shah, founder of Cellgrids.

LOG10 is an Excel Math & Trig function. Returns the base-10 logarithm of a number.

LOG10 syntax

=LOG10(number)

LOG10 is used in financial models and engineering-style calculations where precise numeric work is needed.

Open the live Excel-style spreadsheet and try LOG10 yourself. No Excel install or sign-up needed to start.

What does the LOG10 function do in Excel?

Returns the base-10 logarithm of a number.

What is the syntax of LOG10 in Excel?

The syntax is =LOG10(number). number: A number to use in the calculation.

Where can I practice LOG10 online for free?

Open the free live spreadsheet on Cellgrids and try LOG10 yourself. No Excel install is needed and you can start without signing up.