# Bun Convert a Buffer to a Uint8Array

> Convert a Buffer to a Uint8Array

- Skill: `jarle/bun-convert-a-buffer-to-a-uint8array` (Agent Skill)
- Install (CLI): `npx skillmds@latest add jarle/bun-convert-a-buffer-to-a-uint8array`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jarle/bun-convert-a-buffer-to-a-uint8array/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: jarle (https://skillmd.com/u/jarle)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/jarle/bun-convert-a-buffer-to-a-uint8array

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# Convert a Buffer to a Uint8Array

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  theme={"theme":{"light":"github-light","dark":"dracula"}}
const buf = Buffer.alloc(64);
buf instanceof Uint8Array; // => true
```

***

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