Binary encoder / decoder

Convert text to its UTF-8 binary representation (8 bits per byte) — and back.

Features

Converts any text to its UTF-8 binary form, eight bits per byte, and back again.
Separates each byte with a space or dash to keep long bit strings readable.
Handles accented and non-Latin characters correctly via their multi-byte UTF-8 encoding.

How it works

Choose Encode for text to binary, or Decode to read binary back to text.
Paste your text or a string of 0s and 1s into the input.
Pick a separator between bytes (none, space or dash), then copy the output.

Your files never leave this page

Every conversion runs entirely in your browser using WebAssembly. There is no upload, no server-side processing, no analytics, and no cookies. Open DevTools → Network during the operation and you will see zero outbound traffic.

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Topics covered

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