Text to Binary Converter

Computers keep every letter as a number, and every number as bits, zeros and ones. Text to binary shows that code: each character becomes one or more bytes in the encoding, and each byte eight bits. In UTF-8, the encoding of the web, Latin letters, digits and signs take one byte each, as in ASCII, so OK is 01001111 01001011, while é or Я take two bytes and an emoji such as 😀 four. Type or paste text into the first field and the binary code appears as you type, ready for a puzzle, a greeting card or a lesson about computers.

Under “Separator” choose a space, nothing, a new line or a comma between the bytes. Under “Encoding” pick UTF-16 or an older code page, or “Unicode code points” to write every character as one binary number, which is shorter for emoji. Characters the chosen encoding does not have are listed under the result. To read a binary message, click “Swap”: the code becomes the input and the text appears, and bytes may also be written without spaces. “Open a file” turns a file of up to 1 MB into binary.