Cereio

ASCII Converter

Text

Plain text characters

ASCII Codes

Numeric ASCII values (0-127)

About ASCII Converter

Our free online ASCII Converter helps you convert text to ASCII codes and vice versa. Whether you're debugging string encoding issues, working with low-level data, or learning about character encoding, this tool provides instant conversions between text and ASCII values.

Key Features

Multiple Formats

Convert to decimal, hexadecimal, binary, and octal ASCII codes.

Bidirectional

Convert text to ASCII or ASCII codes back to text.

Real-time Conversion

All formats update automatically as you type.

100% Client-side

All conversions happen in your browser - your data stays private.

Copy Support

One-click copy for any format.

Character Details

View the ASCII value for each character.

How to Use

  1. 1Enter text to see its ASCII codes in various formats.
  2. 2Or enter ASCII codes (decimal, hex, etc.) to convert back to text.
  3. 3View conversions in decimal, hexadecimal, binary, and octal.
  4. 4Copy any format for use in your code or documentation.

Pro Tips

  • 💡ASCII codes 0-31 are control characters (non-printable).
  • 💡Uppercase letters are 65-90 (A-Z), lowercase are 97-122 (a-z).
  • 💡Numbers 0-9 have ASCII codes 48-57.
  • 💡Standard ASCII only covers characters 0-127; extended ASCII goes to 255.

Frequently Asked Questions

What is ASCII?
ASCII (American Standard Code for Information Interchange) is a character encoding standard that assigns numbers 0-127 to letters, digits, punctuation, and control characters.
What's the ASCII code for 'A'?
The ASCII code for uppercase 'A' is 65 in decimal, 0x41 in hexadecimal, 01000001 in binary.
What's the difference between ASCII and Unicode?
ASCII only covers 128 characters (English letters, numbers, basic punctuation). Unicode covers over 140,000 characters from all writing systems worldwide.
Why do I get different values for some characters?
Standard ASCII only defines characters 0-127. Characters above 127 depend on the extended ASCII encoding being used (e.g., Latin-1, Windows-1252).