---
title: Sleep for a fixed number of milliseconds
sidebarTitle: Sleep
mode: center
---

The `Bun.sleep` method provides a convenient way to create a void `Promise` that resolves in a fixed number of milliseconds.

```ts
// sleep for 1 second
await Bun.sleep(1000);
```

---

Internally, this is equivalent to the following snippet that uses [`setTimeout`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setTimeout).

```ts
await new Promise(resolve => setTimeout(resolve, ms));
```

---

See [Docs > API > Utils](/docs/runtime/utils) for more useful utilities.