Text ↔ ASCII Converter
Convert text into decimal character codes, or decimal codes back into text — with space, comma, newline, or custom separators.
Your text stays in this browser. It is never uploaded, and the tool works offline.
About this tool
Converts text to decimal character codes, or decimal codes back to text. Standard ASCII covers 0-127; higher values are valid Unicode but not standard ASCII.
How to use it
- Choose a direction: Text → Codes, or Codes → Text.
- Pick a separator.
- Type your input and read the result live.
FAQ
What is standard ASCII?
Standard ASCII covers decimal values 0 to 127 — the basic Latin letters, digits, punctuation, and a few control codes. Values above 127 are still valid Unicode code points, just not standard ASCII.
What happens if I convert an accented letter or emoji?
It converts to its Unicode code point, which will be a number above 127. The tool notes when your output includes non-ASCII values rather than rejecting them.
What happens with an invalid code, like a letter or a number that's too large?
Invalid tokens are skipped and listed so you know exactly what wasn't converted, instead of the whole conversion silently failing.
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