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Logarithm Calculator

Calculate the logarithm of a number

The calculator will find the logarithm (natural, decimal, etc.) of the given value to the given base (ee, 1010, etc.).

The domain of the logarithm is (0,∞)(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 contact us.

Your Input

Evaluate log⁡e(20)=ln⁡(20)\log_{e}\left(20\right) = \ln\left(20\right).

Answer

The value is ln⁡(20)≈2.995732273553991\ln\left(20\right)\approx 2.995732273553991A.