How to use the text to binary converter
- Choose Text → Binary or Binary → Text.
- Type or paste your content — conversion happens instantly.
- Switch the output base to get hexadecimal or decimal codes instead.
How text becomes binary
Computers store text as numbers. Each character maps to a code point — H is 72, e is 101 — and that number is stored in binary: 72 becomes 01001000. This tool uses UTF-8, the web's standard encoding, so plain English characters take one byte each while accented letters and emoji take two to four bytes. That's why "é" or "😀" produce more binary groups than a plain letter.
Benefits
- Converts text to binary, hexadecimal or decimal character codes.
- Decodes binary back into readable text.
- Uses UTF-8, so accents and emoji convert correctly.
- Runs entirely in your browser.
Limitations to know
- Decoding expects groups of up to 8 bits separated by spaces.
- It is a representation change, not encryption — it provides no security.
- Multi-byte characters produce several groups, which can look surprising.
Common mistakes to avoid
- Treating binary as a way to hide information — anyone can convert it back.
- Pasting binary without spaces between bytes, so it cannot be split correctly.
- Expecting one emoji to be a single 8-bit group.
Alternatives
For numbers between bases use the Binary & Hex Converter; for transport encoding use the Base64 Encoder.
Last updated: August 2026 · Reviewed by the AI Toolbox editorial team.
Frequently asked questions
Is my text uploaded?
No — conversion runs entirely in your browser.
Why does an emoji produce so many bits?
UTF-8 uses up to four bytes for characters outside the basic Latin set, so emoji legitimately need more binary.
What format should binary input be in?
Groups of 8 bits separated by spaces, e.g. 01001000 01101001. Spaces and line breaks are ignored.
Is this encryption?
No — binary is just another way of writing the same data. It provides no security.