# LN

**The function LN returns the numerical approximation of the natural logarithm of a given number.**

This function takes a [Number](../../variable-data-types/the-number-variable-data-type) as input. It returns another Number: the natural logarithm of the given number.

#### Declaration

```javascript
LN(number) -> nat_log
```

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#### Parameters

**number** (required, type: `Number`) Any positive number.

#### Return Values

**nat\_log** (type: `Number`) The natural logarithm of the given number.

#### Example

The following example calculates a numerical estimation of the natural logarithm of 2, or _loge(2)_:

```javascript
LN(2) -> 0.6931471805599453
```
