Yes, but also see below. Natural logarithm is the logarithm to the base e of a number. ln(x) = 2 where x is not equal to 1. ln(x) is the time needed to grow to x, while ex is the amount of growth that has occurred after time x. Natural logarithm calculator finds the log function result in base e (exponential). Because the Ln(x) function has a very special base, it comes up in all branches of science.