ASCII Converter
Free ASCII converter tool. Convert text to ASCII decimal codes, binary, and hexadecimal. Decode ASCII, binary, or hex back to text. View the complete ASCII table with all 128 characters.
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Convert Text to ASCII, Binary, and Hexadecimal
ASCII (American Standard Code for Information Interchange) is the fundamental character encoding for computers. Every letter, number, and symbol has a unique numeric code. This tool converts between text and its various numeric representations.
Understanding ASCII Encoding
ASCII uses 7 bits to represent 128 characters: numbers 0-9, uppercase A-Z, lowercase a-z, punctuation, and 33 control characters. Each character maps to a decimal value (0-127) which can be expressed in binary (8 bits) or hexadecimal (2 digits).
Conversion Formula
ASCII Code = charCodeAt(character)Why Use ASCII Conversion?
Programming & Development
Debug character encoding issues, work with byte streams, and understand string operations at a fundamental level.
Data Analysis
Inspect raw data files, identify non-printable characters, and validate text encoding in datasets.
Education & Learning
Understand how computers represent text, learn binary systems, and study character encoding fundamentals.
Communication & Encoding
Convert messages for technical documentation, create encoded content, or analyze protocol data.
How to Use This Converter
Common Use Cases
Debugging Hidden Characters
Convert text to ASCII to reveal invisible control characters like tab (9), newline (10), and carriage return (13).
Binary Data Inspection
Decode binary data into readable text when analyzing network packets, file headers, or memory dumps.
Hex Editor Work
Convert between hex and ASCII when using hex editors to modify binary files or examine data structures.
CTF Challenges
Decode ASCII art puzzles, binary messages, or hex-encoded flags in capture-the-flag competitions.
Frequently Asked Questions
ASCII uses 7 bits to encode 128 characters (English letters, numbers, basic symbols). Unicode is a superset that includes over 140,000 characters from all world languages. The first 128 Unicode characters are identical to ASCII.