Calculate logarithms - log, ln, log10, log2
Common questions about logarithms
A logarithm is the inverse operation of exponentiation. log₁₀(100) = 2 because 10² = 100.
Other useful tools related to mathematical calculations
How to Use? Enter the number and base for logarithm calculation. Use e (2.718...) for ln, 10 for log, and 2 for log2.
Logarithm with base e. ln(e) = 1, ln(1) = 0
Common logarithm with base 10. log₁₀(100) = 2, log₁₀(1000) = 3
Binary logarithm used in computer science. log₂(8) = 3, log₂(1024) = 10
Calculate logarithms with any base. log₅(125) = 3, log₃(81) = 4
Common questions about logarithms
A logarithm is the inverse operation of exponentiation. log₁₀(100) = 2 because 10² = 100.