ASCII Hex Explorer
A comprehensive character mapping tool for developers. Search and identify the hexadecimal and decimal signatures of any standard ASCII character.
| Char | Description | Hex | Dec | Binary |
|---|
The DNA of Digital Text
ASCII (American Standard Code for Information Interchange) is a character encoding standard for electronic communication. Developed in the 1960s, it represents 128 specified characters into 7-bit integers.
Despite being decades old, the first 128 characters of almost every modern encoding (including UTF-8) are identical to the original ASCII standard. This ensures that basic text files from the 1970s can still be read perfectly by computers today.
The "Control" Era
The first 32 codes (0-31) were originally designed for physical hardware like teletypewriters. While some are obsolete, many still drive our terminal experience:
- LF (10): Line Feed (New Line)
- CR (13): Carriage Return
- BS (08): Backspace
- ESC (27): Escape Sequence
ASCII vs Extended ASCII vs Unicode
Original ASCII
7-bit system (0-127). Standardized English letters, numbers, and symbols.
Extended ASCII
8-bit systems (0-255). Used the 8th bit for regional characters like 'ñ' or 'ö'. Often inconsistent between systems.
Unicode (UTF-8)
Variable bit length. Can represent emojis, math symbols, and every global script while remaining ASCII-compatible.