Arithmetic & Number Theory
Natural Logarithm
Logarithm to base e.
Formula
Formula
y = ln(x)
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| x | input (> 0) | real number (ℝ) | — | input |
| y | natural log | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenx = 2.718281828
Result0.9999999998
Example 2
Givenx = 10
Result2.302585093