---
title: "tau"
excerpt: "Return the value of `tau`. The full circle constant (τ). Equal to 2π."
layout: manual
---

Return the value of `tau`. The full circle constant (τ). Equal to 2π.



```js
tau() -> number
```

### Tags

* `math`

### Examples

```js
const myVar = tau()
```

### Arguments


### Returns

`number`