Binary Translator

A Binary Translator converts human-readable text into binary code - the ones and zeros a computer actually stores - and converts that binary back into text. Each character is turned into its UTF-8 byte value and written out in the base you choose: binary (base 2), octal (base 8), decimal (base 10), or hexadecimal (base 16). Type "Hi" and you instantly see 01001000 01101001; paste that binary back in and you get "Hi" again.

As a text to binary translator it takes whole sentences and paragraphs, not just single letters: the space between two words becomes 00100000 and a line break becomes 00001010. It also works as a binary to decimal translator for byte strings. Decode the binary to text, press Swap, and choose Decimal, and each byte is shown as a number from 0 to 255, so 01001000 01101001 reads as 72 105.

The translation is not a lookup table of a few hundred ASCII letters. This tool encodes the full Unicode range through UTF-8, so accented letters, non-Latin scripts, and even emoji translate correctly across two, three, or four bytes each. When you decode, the tool reassembles multi-byte sequences into the original characters and reports a clear error if the byte stream is malformed, rather than producing silent garbage.

Everything runs 100% in your browser. Whether you are decoding a captured binary string, teaching how character encoding works, or checking how a message is represented at the byte level, nothing you paste is uploaded or logged. The translator works offline once the page has loaded, so you can convert sensitive strings without them ever leaving your device.

Text has to become bytes before it can become binary, and the encoding chosen decides the answer. UTF-8 is used here, which means ASCII characters occupy one byte and produce eight bits each, while an accented letter takes two bytes and an emoji four. So a five-character word is not always forty bits, and a binary string that decodes to something garbled was usually produced under a different encoding. Grouping matters when decoding: eight bits to a byte is the assumption, and a binary string whose length is not a multiple of eight is either truncated or was written in seven-bit ASCII, which was common in older systems. Separators are flexible on input because sources vary, but consistent spacing makes a long string far easier to check by eye.