Log Calculator
Compute a logarithm in any base, with the natural log and base-10 log shown alongside.
About the Log Calculator
logb(x) answers: "b to what power gives x?" log10(1000) = 3 because 10³ = 1000. Change of base: logb(x) = ln(x)/ln(b).
Compute a logarithm in any base, with the natural log and base-10 log shown alongside.
logb(x) answers: "b to what power gives x?" log10(1000) = 3 because 10³ = 1000. Change of base: logb(x) = ln(x)/ln(b).