> For the complete documentation index, see [llms.txt](https://docs.cascade.io/cascade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cascade.io/cascade/functions-and-expressions/functions/math/ln.md).

# LN

LN(`number`)

Returns the natural logarithm of a number

### Arguments

| Argument | Description                              |
| -------- | ---------------------------------------- |
| `number` | Number to calculate natural logarithm of |

### Output

The natural logarithm of a number

### Example

{% embed url="<https://datawrapper.dwcdn.net/fGK6q/1>" %}