The natural logarithm of a number is its logarithm to the base e, it is used to calculate the natural logarithm of a number x, where e is an irrational and transcendental constant approximately equal to 2.718281828, which is generally written as ln(x) or loge(x) or log(x).
For instance, Ln7 = 1.94591, e1.94591 = 7, So The natural logarithm of x is the power to which e would have to be raised to equal x. So Lne = 1.
Natural Logarithm: Ln( 2.718282) = 1
Natural Logarithm: Ln( 6) = 1.791759
Natural Logarithm: Ln( 2) = 0.693147