Micro Tools
Advertisement

Hex Encoder/Decoder

Convert text to hexadecimal and decode hex back to text. Uses UTF-8, so emoji and non-Latin scripts work correctly.

Input

Enter text or hex, pick a direction.

Output

Result appears here.

Advertisement

What hexadecimal is

Hexadecimal is base-16 notation: every byte of data becomes exactly two characters from 0-9 and a-f. It is the standard way to display binary data, hashes, colors and memory dumps in a readable form. Encoding turns your text's UTF-8 bytes into hex pairs; decoding reverses it.

Why UTF-8 matters

Older converters only handled ASCII and mangled anything else. This tool encodes with UTF-8, the web's standard text encoding, so characters from any language and all emoji round-trip through hex without corruption.

Related tools

JSON formatterFormat and validate JSON, privately. Regex testerTest regex live with highlighting. Base64 encoderBase64 encode and decode, plus URL encoder and JWT decoder.

Hex Encoder/Decoder FAQs

How do I read a hex string?
Read it in pairs: each two characters represent one byte. For example, 48 65 6c 6c 6f decodes to the word Hello in UTF-8.
Why does my hex decode fail?
Valid hex needs an even number of digits using only 0-9 and a-f. Spaces and colons between bytes are allowed and ignored; anything else triggers the error.
Is hex encoding the same as encryption?
No. Hex is just a different way of writing the same data and is trivially reversible. Never treat it as a way to hide secrets.
What is hex used for in real life?
Displaying cryptographic hashes, color codes like #ff5c8a, binary file dumps, MAC addresses and debugging network data.
Is my input sent to a server?
No. Encoding and decoding run entirely in your browser.
Advertisement