# bytes.to_hex

## Function

Convert Bytes to lowercase hexadecimal text.

## Syntax

```bt
bytes(value).to_hex(separator)
```

## Parameters

| Parameters | Type | Required | Default value | Description |
|------|------|------|------|------|
| separator | String | No | Empty string | The separator between each byte. |

## Return value

| Type | Description |
|------|------|
| String | Hexadecimal text. |

## Code Example

```bt
data = bytes([66, 84])
text = data.to_hex(' ')

// Output: 42 54
print text
```

## Notes

- `string(bytes(...))` and `bytes(...).to_string()` return undelimited hexadecimal text by default.