00-1F, 7F
ASCII control codes
Non-printing standard ASCII control codes, including DEL.
20-7E
Printable ASCII
Printable keyboard characters from the original 7-bit ASCII set.
80-FF
Extended codes
Values 128-255, not part of standard 7-bit ASCII, allow additional characters to be represented.
About
Common ASCII usage
ASCII is a character encoding standard that represents text as numeric values. It defines the first 128 codes used for common control codes,letters, numbers, punctuation, and symbols.
This table lists each character with its decimal, octal, hexadecimal, binary, symbol, HTML number, HTML entity, and description. These formats are useful when working with HTML, terminal output, data formats, and byte-level text references.
The extended section includes byte values beyond standard ASCII, following the Windows-1252 mapping commonly used by ASCII reference tables. For modern applications, Unicode and UTF-8 are preferred, with UTF-8 remaining compatible with ASCII for the first 128 codepoints.