ASCII Converter – Text to ASCII, Hex, Binary & Back

An ASCII converter translates characters to their numeric codes (American Standard Code for Information Interchange) and back. Standard ASCII covers 0–127. This tool also handles full Unicode, showing code points beyond ASCII.

Select "Text → Codes", type your text, and choose Decimal, Hex, Binary, or Octal. The output updates live — for example, "A" becomes 65 (dec), 41 (hex), 01000001 (bin). No button press needed, unlike older tools.

Select "Codes → Text", paste your numbers, and pick the correct base. The tool accepts spaces, commas, or newlines, and decodes instantly to readable text.

Choose Hex base, paste hex codes like 48 65 6C 6C 6F or 0x48 0x65, then switch to "Codes → Text". You'll get "Hello". This matches RapidTables' examples but works in real time.

Choose Binary base and paste 8-bit groups: 01001000 01101001. The tool converts to "Hi". It also accepts 0b prefixes and strips extra spaces automatically.

ASCII is the original 7-bit set (0–127). Unicode extends it to over 1 million characters. This converter shows true Unicode code points, so emoji and non-English text work — you'll see a warning when values exceed 127.

You're converting characters outside standard ASCII, like é (233) or 😀 (128512). The tool doesn't truncate — it shows the correct Unicode value, avoiding the "ordinal not in range" errors common in strict ASCII tools.

These are non-printable codes 0–31 and 127. The breakdown table names them (NUL, SOH, LF for line feed, CR for carriage return, DEL) so you can debug invisible characters.

Yes. All conversion runs in your browser with JavaScript, exactly as Codeshack advertises client-side privacy【1507591311087135324†L30-L31】. No data is sent or stored.

Space, comma, comma+space, newline, none, or any custom string. The parser normalizes mixed input, so you can paste from logs, CSVs, or code without reformatting.