Free Hex (Hexadecimal) Encoder/Decoder

Hexadecimal aligns perfectly with binary - each hex digit represents 4 bits, and two hex digits represent one byte. This makes it much more compact and readable than binary while still being easy to convert. It is the standard for memory addresses, color codes, and byte-level data.

The 0x prefix is a common convention in programming to indicate that a number is in hexadecimal format. For example, 0xFF means 255 in decimal. This helps distinguish hex from decimal numbers in code.

Hex colors like #FF5733 contain three two-digit hex values: FF (255) for red, 57 (87) for green, and 33 (51) for blue. Each pair ranges from 00 (0) to FF (255), representing color intensity.

Hex encoding doubles the data size (each byte becomes two characters). Base64 only increases size by 33%. However, hex is more readable for byte inspection and debugging, while Base64 is more efficient for data transfer.

Yes, this tool handles hex input with or without spaces. "48 65 6c 6c 6f" and "48656c6c6f" both decode to "Hello".

Non-ASCII characters like emojis or accented letters are encoded as multiple UTF-8 bytes. For example, the euro sign (€) becomes "e2 82 ac" (three bytes). This is normal UTF-8 encoding behavior.