---
title: "TOTP.gen([timeStep], [bias]) | Grafana k6 documentation"
description: "Generate a TOTP code"
---

> For a curated documentation index, see [llms.txt](/llms.txt). For the complete documentation index, see [llms-full.txt](/llms-full.txt).

# TOTP.gen(\[timeStep], \[bias])

Generates a TOTP code for the current time.

Expand table

| Parameter           | Type   | Description                                                  |
|---------------------|--------|--------------------------------------------------------------|
| timeStep (optional) | number | Time step in seconds (default: 30)                           |
| bias (optional)     | number | Time bias in seconds to offset the current time (default: 0) |

### Returns

Expand table

| Type    | Description             |
|---------|-------------------------|
| Promise | The generated TOTP code |

### Example

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

```javascript
import { TOTP } from 'https://jslib.k6.io/totp/1.0.0/index.js';

export default async function () {
  const totp = new TOTP('GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ', 6);

  // Generate code with default 30-second time step
  const code = await totp.gen();
  console.log(`TOTP code: ${code}`);

  // Generate code with 60-second time step
  const code60 = await totp.gen(60);
  console.log(`TOTP code (60s step): ${code60}`);
}
```