# How to Use the Inverse Log Function in Excel

Written by ken burnside
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A logarithm is the exponent of a mathematical equation. For example, in base 2, log 3 = 8. The inverse logarithm expresses that relationship as 2 raised to the third power equals 8. Excel uses this latter convention to generate inverse logarithm functions, but has no dedicated inverse log functions of its own.

Skill level:
Easy

## Instructions

1. 1

Start Excel.

2. 2

Generate the inverse of a common -- base 10 -- logarithm in cell "A1" by typing "=POWER(10,B1)" and entering the logarithm desired in cell "B1." You can replace the first 10 inside the parentheses with any base you choose.

3. 3

Generate the inverse of a natural logarithm -- base 2.8172 -- in cell "A2" by typing "=EXP(B2)" and entering the logarithm desired in cell "B2."

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