Logarithm Calculator
Compute the logarithm of a number in any base, plus natural log (ln), log₁₀ and log₂.
How to use the Logarithm Calculator
- Enter or select: Number x, Base b.
- The results (log_b(x), ln(x), log₁₀(x), log₂(x)) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- log_b(x) = ln(x) / ln(b)