Log Calculator
Enter your values below and click the button for instant results.
Logarithm
Result
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About Log Calculator
This Log Calculator is fast, accurate and 100% private. All calculations run locally in your browser, so your information never leaves your device. No sign-up, no downloads, works beautifully on mobile and desktop.
FAQ
What is a logarithm?▶
A logarithm answers "to what exponent must the base be raised to produce this number?" For example log(100) base 10 = 2 because 10^2 = 100.
What is the natural log?▶
The natural logarithm (ln) uses base e (about 2.71828). It is widely used in science and finance.