Natural Log Calculator

Natural Log Calculator to calculate the natural logarithm of a number. The natural logarithm of x is the base e logarithm of x which can be written as ln(x) or log_e(x). Enter a number below, and the ln Calculator will calculate the result instantly.

What is natural log?

The natural logarithm of a number is its logarithm to the base of e where e is approximately 2.718281828459. The natural logarithm of e, ln(e) = 1, because e¹ = e, and the natural logarithm of 1 is 0, because e⁰ = 1.

Natural Log

Following is natural log table that shows ln(1) up to ln(100) calculated by our natural logarithm calculator.