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Text to Binary Converter

Free online text to binary converter. Turn any text into 8-bit binary (UTF-8) instantly — great for learning how computers store characters. Runs 100% in your browser.

text-to-binary.run

How does text become binary?

Every character is stored as one or more bytes under a character encoding — the web standard is UTF-8. The letter 'H' is byte 72, which in binary is 01001000. This tool encodes your text as UTF-8 and prints each byte as an 8-bit group.

ASCII characters (English letters, digits, punctuation) take one byte each; accented letters typically take two; emoji take four — which is why one emoji becomes four binary groups.

How to use

  1. 01Type or paste your text into the input box.
  2. 02Click Convert to binary.
  3. 03Each character is shown as an 8-bit UTF-8 binary group.
  4. 04Copy or download the binary output.

Frequently asked questions

Why is each character 8 bits?
Text is first encoded as UTF-8 bytes, and each byte is 8 bits. ASCII characters use one byte; accented characters and emoji use two to four bytes.
Why does one emoji produce several binary groups?
Emoji are encoded as multiple UTF-8 bytes (usually four), so a single emoji becomes four 8-bit groups.
Is my text uploaded?
No. The conversion uses the browser's built-in TextEncoder and runs completely offline.

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