# Convert a Blob to an ArrayBuffer

> Read the contents of a `Blob` into an `ArrayBuffer` with its `.arrayBuffer()` method.

The [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob) class provides several methods for consuming its contents in different formats, including `.arrayBuffer()`.

```ts
const blob = new Blob(["hello world"]);
const buf = await blob.arrayBuffer();
```

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See [Binary Data](https://bun.aphrody.app/docs/runtime/binary-data#conversion).