> ## Documentation Index
> Fetch the complete documentation index at: https://bun.manicule.dev/llms.txt
> Use this file to discover all available pages before exploring further.
> For every page in one file, fetch https://bun.manicule.dev/llms-full.txt (large).
> To search and read these docs as tools, connect the MCP server at https://bun.manicule.dev/api/mcp.
> Every agent surface: https://bun.manicule.dev/.well-known/llms-manifest.json

# Convert a Buffer to a Uint8Array (/guides/binary/buffer-to-typedarray)

<!-- agent-signals: reading_time_min: 1 · est_tokens: 105 · updated: 2026-08-02 -->
Related: [Convert an ArrayBuffer to a string](/guides/binary/arraybuffer-to-string.md), [Convert an ArrayBuffer to a Buffer](/guides/binary/arraybuffer-to-buffer.md), [Convert an ArrayBuffer to a Blob](/guides/binary/arraybuffer-to-blob.md), [Convert an ArrayBuffer to an array of numbers](/guides/binary/arraybuffer-to-array.md), [Convert an ArrayBuffer to a Uint8Array](/guides/binary/arraybuffer-to-typedarray.md), [Convert a Buffer to a string](/guides/binary/buffer-to-string.md)

The Node.js [`Buffer`](https://nodejs.org/api/buffer.html) class extends [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array), so no conversion is needed. All properties and methods on `Uint8Array` are available on `Buffer`.

```ts
const buf = Buffer.alloc(64);
buf instanceof Uint8Array; // => true
```

***

See [Binary Data](/runtime/binary-data#conversion).