JavaScript logarithm
Math.log() returns the natural logarithm (base e) of a number. Pass 0 and you get -Infinity; pass a negative number and you get NaN.
Syntax
Math.log(num)Examples
| Input | Arguments | Output |
|---|---|---|
| 1 | — | 0 |
Gotchas
- For base-10 or base-2 use Math.log10() or Math.log2().
Try it live
Type your input and see logarithm transform it instantly.
Want to go further? Chain logarithm with other functions, pipe one output into the next and watch your data transform in the visual Playground.