# Logarithm Calculator

The calculator will find the logarithm (natural, decimal, etc.) of the given value to the given base ($e$, $10$, etc.).

The domain of the logarithm is $(0,\infty)$, the range is $(-\infty,\infty)$.

It is neither an even nor an odd function.

If you enter a value outside of the domain, the result will be a complex number.

If you enter a negative base, the result will be a complex number.

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please write it in the comments below.

Evaluate $\log_{e}\left(20\right) = \ln\left(20\right)$.
The value is $\ln{\left(20 \right)}\approx 2.995732273553991$A.