Text to Binary
Convert any text to 8-bit binary bytes and back — UTF-8 safe, instant and fully in your browser. Perfect for teaching, puzzles and CS homework.
Next steps
This tool runs entirely in your browser. Your data never leaves your device — it is not uploaded to any server.
How to use
- 1Type or paste the text to encode — binary appears live.
- 2Flip on 'Decode binary to text' to convert binary groups back into words.
- 3Copy the result with one click.
Text to Binary
Every character you type becomes its UTF-8 byte sequence rendered as groups of eight 0s and 1s. 'Hi!' turns into 01001000 01101001 00100001 — the exact bits a computer stores, shown in a form you can read and copy.
Switch on Decode to go the other way: paste space-separated binary groups and get the original text back. Multi-byte characters such as emoji and CJK are handled correctly because decoding goes through the browser's UTF-8 TextDecoder.
Frequently asked questions
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Is there a length limit?
No artificial limit. Text is processed entirely in memory, so even very large documents work — the only practical bound is your device's RAM.
Can I process multiple files at once?
Text tools work on the text you paste or drop in; batch operations that support it show an explicit multi-file picker.
Is this tool free to use?
Yes, completely free — no signup, no subscription, no daily limits, and no watermarks on the output.
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Embed this tool
Put this tool on your own site with one line — it runs entirely in the visitor's browser.
<iframe src="https://zoyku.com/en/tools/text-to-binary?embed=1" width="100%" height="640" style="border:0;border-radius:16px" title="Zoyku — text-to-binary" loading="lazy"></iframe>