Natural Log Calculator

Use our free natural log calculator to compute ln(x), the natural logarithm of any positive number.

Math

Number

Formula

The natural logarithm ln(x) is the logarithm with base e, where e ≈ 2.71828. For example, ln(7.389) ≈ 2 because e² ≈ 7.389.

ln(N) = logₑ(N)

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

Result: 2

e is Euler's number, approximately 2.71828. It is the base of the natural logarithm and a fundamental mathematical constant.

No. The natural logarithm is only defined for positive numbers.

CalculateMe Team

Last updated: 2026-07-13