---
title: "log2"
excerpt: "Computes the base 2 logarithm of the number."
layout: manual
---

Computes the base 2 logarithm of the number.



```js
log2(num: number) -> number
```

### Tags

* `math`

### Examples

```js
const myVar = log2(4)
```

### Arguments

* `num`: `number` (REQUIRED)

### Returns

`number`