tag Text to ASCII/Unicode Code Converter star

How It Works

Every character you type is walked one at a time and converted to its Unicode code point — the same numbering system whose first 128 values, 0 through 127, are the original ASCII table. Within that range, codes 32-126 make up the printable block: letters, digits, punctuation and the space character. Codes 0-31 are control characters, a historical layer left over from teleprinters and typewriters that used specific codes to move the print head or paper rather than print a glyph — code 13 (carriage return) sent the head back to the start of the line, and code 10 (line feed) advanced the paper by one line, a split that is why plain-text files on different operating systems still disagree about how a line ending is stored.

Example: typing "Hi!" produces the code list 72, 105, 33 — capital H is 72, lowercase i is 105, and the exclamation mark is 33, all inside the printable 32-126 range. Pasting that list back into the decoder rebuilds "Hi!" exactly, character for character.

Where this tool goes beyond a textbook ASCII table is codes 128 and above. That upper range, informally called "extended ASCII," was never standardized: different vendors and regions built different 256-value code pages, assigning different glyphs to the same byte. A byte that meant "ğ" on one Turkish code page could mean an entirely different character, or nothing printable at all, on another system's code page. That inconsistency is precisely the problem UTF-8 and full Unicode code points were built to solve: instead of one byte per character with a code-page-dependent meaning, every character gets a stable numeric identity that means the same thing everywhere. That is why this converter encodes each character as a full Unicode code point rather than truncating to a single byte, so Turkish letters like ğ, ş, ı, ö, ü, ç and emoji all convert reliably.

What to Know

• Printable range: codes 32-126 always correspond to a visible character on any system; anything else needs context (a font, a code page, or full Unicode) to interpret correctly.
• Control codes have no glyph: decoding a value from 0-31 (or 127, DEL) back to text will not show a printable character — that is expected, not an error, since these codes were never meant to be displayed.
• Beyond byte 255: Unicode code points go far past the old 256-value ceiling — emoji, for instance, live in the hundred-thousands — and this tool handles the full range, not just one byte's worth.
• Lossless round-trip: encoding then decoding always returns your original text exactly, since each code point maps to one character with nothing approximated or compressed.
• Runs entirely in your browser: no text is sent anywhere, so it is safe to convert sensitive strings, tokens or passwords for debugging.