bun-types/docs/guides/binary/buffer-to-arraybuffer.mdx

Type definitions and documentation for Bun, an incredibly fast JavaScript runtime

---
title: Convert a Buffer to an ArrayBuffer
sidebarTitle: "Buffer to ArrayBuffer"
mode: center
---

The Node.js [`Buffer`](https://nodejs.org/api/buffer.html) class provides a way to view and manipulate data in an underlying `ArrayBuffer`, which is available via the `buffer` property.

```ts
const nodeBuf = Buffer.alloc(64);
const arrBuf = nodeBuf.buffer;
```

---

See [Docs > API > Binary Data](/docs/runtime/binary-data#conversion) for complete documentation on manipulating binary data with Bun.