From numbers back to words
Got a list like 72 101 108 108 111 from a program, puzzle or log file? Choose the number format and the text appears instantly. Codes can be separated by spaces, commas or semicolons.
Common prefixes are understood automatically: 0x41, U+0041, A and \u0041 are all read as hexadecimal, so you can paste codes straight from source code or HTML.
How to convert ASCII codes to text
- 1
Pick the number format
Decimal, Hex, Binary or Octal.
- 2
Paste the codes
Separated by spaces, commas or new lines.
- 3
Read and copy the text
Invalid values are flagged.
Key features
Four bases
Decimal, hex, binary and octal.
Prefix detection
0x, U+, &#x and \u understood.
Full Unicode
Codes above 127 decode to any character.
Error flags
Invalid numbers show as �.
Common uses
- Debugging: Read character codes from logs and dumps.
- CTF and puzzles: Decode number-based clues.
- Learning: Check conversions for assignments.
Tips and good to know
- If the text looks wrong, check the number format — “65” means A in decimal but “e” in hex.
- For HTML entities like
&or₹use the HTML Entity Decoder.
Frequently asked questions
What text is 72 101 108 108 111?
“Hello”, when read as decimal ASCII codes.
Can I paste codes separated by commas?
Yes. Spaces, commas, semicolons and line breaks all work.
Does it support codes above 127?
Yes. Any Unicode code point up to 1,114,111 is converted.