---
title: "randomUUID | Grafana k6 documentation"
description: "randomUUID produces a 36-characters long string containing a cryptographically random UUID v4."
---

# randomUUID

The `randomUUID` method produces a 36-characters long string that contains a cryptographically random UUID v4.

## Usage

![Copy code to clipboard](/media/images/icons/icon-copy-small-2.svg) Copy

```none
randomUUID()
```

## Return Value

A string containing a 36-character cryptographically random UUID v4.

## Example

JavaScript ![Copy code to clipboard](/media/images/icons/icon-copy-small-2.svg) Copy

```javascript
export default function () {
  const myUUID = crypto.randomUUID();

  console.log(myUUID);
}
```