ASCII Converter – Convert ASCII Online (Free Tool)
Free online ASCII Converter tool to convert text to ASCII codes and ASCII codes to text. Translate between characters and their numeric representations. Perfect for encoding and debugging.
Example Output
H = 72, i = 105 (decimal ASCII codes).
72 105
What is ASCII Converter?
ASCII Converter switches between text and the decimal ASCII (or Unicode codepoint) values that represent each character. Useful for programming education, debugging character encoding issues, and decoding numeric ciphers used in puzzles.
Why use this tool?
- 100% free with no hidden costs or daily limits
- Works offline after the first page load
- Lightweight page weight that loads quickly even on slow connections
- Handles Unicode correctly — emoji, CJK, Arabic, and accented Latin all stay intact
- Cleanly handles pasted content with mixed line endings (CRLF, LF, CR)
How to use
- Pick direction: Text → ASCII codes, or ASCII codes → Text
- Enter text (single line) or comma/space-separated decimal codes
- Each character converts to its decimal ASCII (or Unicode codepoint) value
- Copy the result
Examples
Inspect codepoints
"A" → 65, "a" → 97, "0" → 48 — these constants come up in coding interviews and low-level string manipulation.
Decode "65 66 67"
Space-separated decimals → "ABC". Common in basic puzzles.
Common use cases
- Computer science education (showing character ↔ number mapping)
- Debugging string-handling code that uses codepoints
- Decoding/encoding number-based puzzles
- Comparing ASCII vs Unicode behaviour for non-Latin characters
Troubleshooting
- Non-ASCII chars produce codes above 127.
- The tool uses Unicode codepoints. "é" = 233, "日" = 26085, "🎉" = 127881. Strict ASCII is 0-127 only.
Frequently Asked Questions
ASCII (American Standard Code for Information Interchange) is a character encoding standard that assigns numeric codes to letters, digits, punctuation, and control characters.
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