How are non-ASCII characters handled?

The tool uses UTF-8 encoding, so characters outside ASCII (accented letters, emoji, CJK characters) are encoded as their multi-byte UTF-8 sequences in hex. For example, "é" → C3 A9.

What format does the hex output use?

Choose between: plain lowercase hex (48656c6c6f), uppercase (48656C6C6F), space-separated bytes (48 65 6c 6c 6f), or 0x-prefixed (0x48 0x65 0x6c...).

What is hex encoding used for?

Hex is used for: displaying binary data in a readable format (e.g., hash outputs, encryption keys), colour codes (#rrggbb), MAC addresses, memory addresses in debuggers, and network protocol dumps.

Is hex encoding the same as Base16?

Yes. Hexadecimal (base 16) encoding represents each byte as two characters (0–9 and a–f). It is less compact than Base64 (2 chars per byte vs ~1.33 chars per byte) but more human-readable for byte-level inspection.

Hex Encoder / Decoder

Encodes text strings to their hexadecimal representation (each character becomes two hex digits) and decodes hex strings back to text. Handles UTF-8 encoding correctly, so non-ASCII characters produce multiple hex pairs. Optionally inserts spaces or 0x prefix between bytes for readability.

Runs entirely in your browser — your input is never uploaded, stored, or logged.

Enter text to encode to hex, or hex to decode back to text — with UTF-8 support. For Base64 encoding instead of hex, use the Text to Base64 encoder.