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Glossary Data & Encoding

ASCII

ASCII is a 7-bit character encoding that assigns numbers 0 to 127 to English letters, digits, punctuation and control codes.

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In more detail

Codes 0 to 31 (and 127) are control characters such as newline and tab; 32 to 126 are the printable characters. Every ASCII text is also valid UTF-8, which is why the two coexist so easily.

Example

The letter A is 65 (01000001), a is 97 and the digit 0 is 48. Convert text to codes with Text to ASCII Converter and back with ASCII to Text Converter.

Try these tools

Text to ASCII Converter

Convert human-readable text strings into their standard ASCII decimal codes (Base-10).

ASCII to Text Converter

Convert ASCII character codes (Base-10) back into human-readable text.

See also

  • Glossary UTF-8
    UTF-8 is the dominant Unicode encoding, writing each character as one to four bytes and staying identical to ASCII for the first 128.
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