> ## Documentation Index
> Fetch the complete documentation index at: https://voltaire.tevm.sh/llms.txt
> Use this file to discover all available pages before exploring further.

# Hex Encoding and Decoding

> Convert between hex strings and byte arrays using Voltaire's Hex primitive

Convert between hex strings and byte arrays using Voltaire's Hex primitive

```typescript theme={null}
import { Bytes } from '@tevm/voltaire/Bytes';
import * as Hex from '@tevm/voltaire/Hex';

// Encode bytes to hex string
const bytes = Bytes.from([72, 101, 108, 108, 111]); // "Hello" in bytes
const hexString = Hex.fromBytes(bytes);

// Decode hex string back to bytes
const decoded = Hex.toBytes(hexString);

// Create hex directly from string
const directHex = Hex.from("0x48656c6c6f");
```

<Tip>
  This is a fully executable example. View the complete source with test assertions at [`examples/hex-and-bytes/hex-encode-decode.ts`](https://github.com/evmts/voltaire/blob/main/examples/hex-and-bytes/hex-encode-decode.ts).
</Tip>

## Related

* [API Reference](/primitives)
* [More Examples](/examples)