Logarithm Calculator
Calculate the logarithm of a number in any base.
Result
Results are estimates for general information only and are not professional advice.
Logarithms
A logarithm answers the question: to what power must the base be raised to produce this number? This calculator computes log in any base, along with the natural log (ln) and log base 10.
Frequently Asked Questions
What is the Logarithm Calculator?
Calculate the logarithm of a number in any base. It runs instantly in your browser and is completely free.
Is the Logarithm Calculator free and does it require signup?
Yes. Every calculator on Calculatis is 100% free with no registration, and the values you enter are never stored.
How accurate is the Logarithm Calculator?
It uses standard, widely-accepted formulas. Results are reliable estimates for general use and are not a substitute for professional advice.