ASCII Table Reference

ASCII (American Standard Code for Information Interchange) is a character encoding standard developed in the 1960s that uses 7-bit integers to represent 128 characters: control characters (0-31), printable characters (32-126), and the DEL character (127). This reference tool provides a comprehensive, searchable view of the entire ASCII table with decimal, hexadecimal, binary, and character representations for each code point.

Understanding ASCII is fundamental to computing. It is the basis for how text is stored, transmitted, and displayed across virtually all computer systems. Whether you are debugging network protocols, working with embedded systems, or learning about character encoding, the ASCII table is an essential reference. This tool is especially useful for developers who need to look up character codes quickly, students studying computer science fundamentals, and engineers working with low-level data formats where ASCII encoding is prevalent.

Common use cases include looking up character codes for programming, understanding control character functions, converting between number bases for ASCII values, finding HTML entity names, and learning how text encoding works at a fundamental level.

1. Browse the table — Scroll through the complete ASCII table showing Dec, Hex, Binary, Char, and Name columns for all 128 characters.
2. Search — Type in the search box to filter characters by decimal code, hex value, binary pattern, character, or name.
3. Filter by category — Use the dropdown to view specific groups: control characters (0-31), printable characters (32-126), or the DEL character (127).
4. Toggle columns — Use the checkboxes to show or hide the Abbreviation and HTML Entity columns as needed.
5. Reference information — Each row displays the character's value in multiple formats along with its common name and abbreviation.