[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Buffer](https://evolu.dev/docs/api-reference/common/Buffer) › hexToBytes

```ts
function hexToBytes(hex: string): Uint8Array;
```

Defined in: node_modules/.bun/@noble+ciphers@2.1.1/node_modules/@noble/ciphers/utils.d.ts:45

Convert hex string to byte array. Uses built-in function, when available.

## Example

```ts
hexToBytes("cafe0123"); // Uint8Array.from([0xca, 0xfe, 0x01, 0x23])
```