How to use it
- Text to binary: type or paste your text in the input box and press Text → Binary. Each character becomes an 8-bit binary group, separated by spaces.
- Binary to text: paste space-separated 8-bit groups (like
01001000 01101001) and press Binary → Text to decode them. - Copy the result with one click and paste it wherever you need it.
What does "text to binary" actually mean?
Computers store everything as numbers, and at the lowest level those numbers are written in binary — a base-2 system that uses only the digits 0 and 1. When you convert text to binary, each character is first turned into a number using a character encoding. This tool uses UTF-8, the standard encoding of the modern web. Plain English letters take one byte each, so the capital letter H becomes the byte 72, which is 01001000 in 8-bit binary. Emoji and many accented characters take several bytes, and the tool handles those automatically so the round trip from text to binary and back is lossless.
Grouping the output into 8-bit chunks (called octets or bytes) is the convention almost everyone expects, which makes the result easy to read, share in homework, or feed into other programs. To decode, the tool splits your input on spaces, checks that every group is exactly eight 0s and 1s, turns each group back into a byte, and then reads the byte sequence as UTF-8 text. If any group is the wrong length or contains a character other than0 or 1, you get a clear error message instead of a garbled result.
Is it private?
Yes. This translator runs entirely in your browser using the built-in TextEncoder and TextDecoder Web APIs. Your text is never sent to a server, never logged, and never uploaded anywhere — so it is safe to use even with notes, messages, or anything you would rather keep on your own device. You can confirm this by turning off your internet connection: the tool keeps working perfectly because all the conversion happens locally.
Frequently asked questions
Why is each character 8 bits?
Eight bits make one byte, and a single byte can represent 256 values — enough for every basic Latin character. UTF-8 uses one byte for common English text and more bytes for other characters, and this tool pads each byte to a full 8 bits so the output lines up neatly.
Can I paste binary without spaces?
For decoding, separate each 8-bit group with a space (for example 01001000 01101001). Spaces tell the tool exactly where one byte ends and the next begins, which avoids ambiguity.
What happens with invalid binary?
If a group is not exactly eight 0s and 1s, the tool stops and shows an error pointing to the bad group, so you can fix it instead of getting a wrong answer.