Text to Binary Converter
Convert any text into 8-bit binary code, and turn binary back into readable text. Full UTF-8 support, all in your browser.
From letters to ones and zeros
Every character your computer shows is stored as a number, and this text to binary converter makes those numbers visible. Type in the top box and each character is encoded as UTF-8 and written as an 8-bit group, so the word Hi becomes 01001000 01101001. The bottom box does the reverse: paste binary groups and read the text back out. If a group is the wrong size or has a stray character, you get a clear note rather than garbled output. Everything runs locally in your browser.
Stop losing the strings you convert
One conversion leads to another, and they all disappear when the tab closes. Relic keeps an end-to-end encrypted, searchable record of everything you copy, synced across every device and kept for as long as you want. The converter is free, and the snippets you copy can finally stick around.
Frequently asked questions
How do I convert text to binary?
Type or paste text in the top box and each character is written out as an 8-bit binary group, so Hi becomes 01001000 01101001. The bottom box does the reverse: paste binary groups and read the text back. Both run as you type.
How is each character turned into 8 bits?
Your text is encoded as UTF-8 first, then every byte is shown as a 0-padded 8-bit group separated by spaces. Plain ASCII letters are one byte each, while emoji and accented characters take several bytes, so they produce more than one group per character.
Why do I need spaces between the binary groups?
The decoder splits your input on whitespace and expects each group to be exactly 8 bits of 0s and 1s. If a group is the wrong length or contains anything other than 0 and 1, it tells you which group is off instead of guessing, and if the bytes do not form valid UTF-8 it says so rather than printing garbage.
What is this useful for?
It is great for learning how computers store text, for classroom exercises, and for puzzle or CTF challenges where a message is hidden as ones and zeros. If you want a broader converter with the same idea, the binary-translator tool covers the same ground.
Does the conversion happen on your servers?
No. Both the text-to-binary and binary-to-text directions run entirely in your browser, so nothing you paste is uploaded. You can convert freely without anything leaving your device.