# Convert an ArrayBuffer to a Blob (/docs/guides/binary/arraybuffer-to-blob)

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Related: [Convert an ArrayBuffer to a string](/docs/guides/binary/arraybuffer-to-string.md), [Convert an ArrayBuffer to a Buffer](/docs/guides/binary/arraybuffer-to-buffer.md), [Convert an ArrayBuffer to an array of numbers](/docs/guides/binary/arraybuffer-to-array.md), [Convert an ArrayBuffer to a Uint8Array](/docs/guides/binary/arraybuffer-to-typedarray.md), [Convert a Buffer to a string](/docs/guides/binary/buffer-to-string.md), [Convert a Buffer to an ArrayBuffer](/docs/guides/binary/buffer-to-arraybuffer.md)

A [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob) can be constructed from an array of "chunks", where each chunk is a string, binary data structure, or another `Blob`.

```ts
const buf = new ArrayBuffer(64);
const blob = new Blob([buf]);
```

***

By default the `type` of the resulting `Blob` is unset. Set it with the `type` option.

```ts
const buf = new ArrayBuffer(64);
const blob = new Blob([buf], { type: "application/octet-stream" });
blob.type; // => "application/octet-stream"
```

***

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