[Runtime
](../../../index.md)[Package Manager
](../../../pm/cli/install/index.md)[Bundler
](../../../bundler/index.md)[Test Runner
](../../../test/index.md)[Guides
](../../index.md)[Reference
](https://bun.com/reference)[Blog
](https://bun.com/blog)[Feedback
](../../../feedback/index.md)
The Buffer class extends Uint8Array with a number of additional methods. Use Buffer.from() to create a Buffer instance from a Uint8Array.
const arr: Uint8Array = ...
const buf = Buffer.from(arr);
See Docs > API > Binary Data for complete documentation on manipulating binary data with Bun.
Was this page helpful?
[
Convert a Uint8Array to an ArrayBuffer
Previous
](../typedarray-to-arraybuffer/index.md)[
Convert a Uint8Array to a Blob
Next
](../typedarray-to-blob/index.md)