> ## Documentation Index
> Fetch the complete documentation index at: https://docs.anlytic.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Ln

Returns the natural logarithm (base e) of a number

**Category:** `math`

**Syntax:**

```
Ln([number_column])
```

**Returns:** `Float`

**Context Filtering:** ✓ Yes

## Parameters

| Name     | Type               | Required | Description                                    |
| -------- | ------------------ | -------- | ---------------------------------------------- |
| `number` | `number or column` | ✓ Yes    | The number to compute the natural logarithm of |

**Allowed Column Types for `number`:** INT, FLOAT, DECIMAL

## Validation

* Minimum parameters: 1
* Maximum parameters: 1

## Examples

```
Ln(2.71828)
```

Natural logarithm of e
**Result:** `1`

```
Ln([Value])
```

Natural logarithm for each value in the column