Natural Log Calculator

Last updated: 2026-08-24

Natural Log Calculator — Calculate natural logarithms.
Inputs
Result
Enter values and press Calculate

How to use it

  1. Value x = 7.389
  2. Natural log is base and ≈ 2.71828
  3. Calculate ln(7.389) ≈ 2.0000
  4. Verification: e² ≈ 7.389

Common mistakes

  • ⚠️ Trying to calculate ln of negative number or zero
  • ⚠️ Confusing ln with log₁₀
  • ⚠️ Not recognizing that ln(and) = 1

Worked example

Calculate ln(5).

The natural logarithm {ln} is the power to which and must be raised to get x.

Input guide

FieldTypical range
xArgument: 0.0001 to 1e12 (must be positive)