# Convert a Uint8Array to a ReadableStream (/docs/guides/binary/typedarray-to-readablestream)

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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 a Blob](/docs/guides/binary/arraybuffer-to-blob.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)

The naive approach to creating a [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream) from a [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) is to use the [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream) constructor and enqueue the entire array as a single chunk. For a large array, this may be undesirable because it doesn't stream the data in smaller chunks.

```ts
const arr = new Uint8Array(64);
const stream = new ReadableStream({
  start(controller) {
    controller.enqueue(arr);
    controller.close();
  },
});
```

***

To stream the data in smaller chunks, first create a `Blob` instance from the `Uint8Array`, then use [`Blob.stream()`](https://developer.mozilla.org/en-US/docs/Web/API/Blob/stream) to create a `ReadableStream`.

```ts
const arr = new Uint8Array(64);
const blob = new Blob([arr]);
const stream = blob.stream();
```

***

Pass a number to `.stream()` to set the chunk size.

```ts
const arr = new Uint8Array(64);
const blob = new Blob([arr]);

// set chunk size of 1024 bytes
const stream = blob.stream(1024);
```

***

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