> ## Documentation Index
> Fetch the complete documentation index at: https://bun-1dd33a4e-farm-dc5e99a7-serve-route-target-normalization.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Convert a Buffer to an ArrayBuffer

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 theme={null}
const nodeBuf = Buffer.alloc(64);
const arrBuf = nodeBuf.buffer;
```

***

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


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