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Text to ASCII converter
Convert text to decimal or hexadecimal ASCII values, or decode numbers back to text. Non-ASCII characters are clearly identified.
Try a round trip
In decimal mode, ABC becomes 65 66 67. In hexadecimal mode it becomes 41 42 43. Switch to Decode and paste the numbers back to recover the original ASCII text. Separate values with spaces, newlines or commas.
ASCII is a 7-bit encoding with values from 0 to 127. The printable range is 32–126; the remaining values are controls such as line feed (10), carriage return (13) and tab (9). Some decoded controls are invisible in the output field.
ASCII is not UTF-8
The letter é and emoji are outside ASCII. Encoding marks them with a U+ code point and “not ASCII” rather than dropping them or pretending their UTF-8 bytes are ASCII codes. These markers are explanatory and cannot be decoded as numeric input.
This page converts character codes. If you want large letters made from smaller characters, use ASCII Art instead. Neither this converter nor a Unicode font generator changes the encoding of a file on your disk.