Math calculator
Log Calculator
Calculate logarithms for common log, natural log, binary log, and custom bases with clear formulas.
Math tool
Log Calculator
Calculate logarithms with base 10, base 2, base e, or a custom positive base.
Result
2
Formula
log base b of x = ln(x) / ln(b)
The input value must be greater than 0. The base must be greater than 0 and cannot equal 1.
Common Examples
log10(100)
2
log2(8)
3
ln(e)
1