Binary to ASCII Converter

ASCII is the oldest character set still in use: 128 characters numbered from 0 to 127, with the English letters, the digits, punctuation and 33 control characters such as the line break. Every ASCII character fits in seven bits and takes one byte in a computer, so the capital A, number 65, is 01000001, and the lowercase a, number 97, is 01100001. This page opens with the ASCII encoding: paste bytes separated by spaces, commas or line breaks, or one long string of digits, and every group of eight digits becomes one character as you type. A byte with a value above 127 is not ASCII, and the converter says so instead of guessing.

Texts written today are usually in UTF-8, which keeps the 128 ASCII characters as they are and writes letters such as é, ß or Я with two or more bytes. If your binary code contains such letters, choose UTF-8 or another encoding in the “Encoding” list, and the converter reads the bytes the way they were written. Control characters such as the tab and the line break keep their place in the text, while the other control characters are invisible. “Text to binary” writes the binary ASCII code of a text, with a space, a line break, a comma or nothing between the bytes. Everything runs in your browser.