Text to Binary Converter
Convert text to binary and back, in your browser.
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Frequently asked questions
Each character is encoded as UTF-8 bytes, and every byte is written as an 8-bit binary number (00000000 to 11111111). Plain ASCII letters become one byte each; accented characters and emoji use several bytes, so you'll see more 8-bit groups.
Paste groups of 0s and 1s separated by spaces, or one continuous run of bits. The total number of bits must be a multiple of 8, since each byte is 8 bits. The tool reads the bytes as UTF-8 and shows the original text.
You'll see a message if the input contains anything other than 0 and 1, if the bit count isn't a multiple of 8, or if the bytes don't form valid UTF-8 text. Fix the input and the result updates instantly — nothing is ever submitted.
No. The conversion runs entirely in your browser using built-in encoding APIs. Your text and binary never leave the page and aren't sent to any server.
Last updated 2026-06-23.