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Logarithm Calculator

Calculate log base 10, natural log, log base 2 or any custom base. Includes antilog mode.

Number (x)

Base

Value (x) — compute base^x

Base

Result

log₁₀(x)

ln(x)

log₂(x)

Change-of-base:

Your files are processed securely and automatically deleted after 1 hour. We never store or share your data.

About Logarithm Calculator

Our free Logarithm Calculator helps you run quick, accurate calculations for everyday financial and mathematical needs with just a few inputs. Calculate log base 10, natural log, log base 2 or any custom base. Includes antilog mode. Enter your values, and the calculator instantly shows detailed results with breakdowns you can understand. No signup, no ads interrupting your workflow — just accurate, reliable calculations you can trust. Works on any device, saves nothing to our servers.

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