Text to Binary Converter
Type any text and see exactly how a computer stores it: every character becomes a byte of 8 binary digits (UTF-8 encoding), with spaces between bytes so you can read the pattern. Paste binary code — space-separated bytes — and it decodes back into text in the other direction.
This is the classic computer-science exercise: seeing that 'Hi' is 01001000 01101001 makes abstract bits concrete. It works for emoji too (they take more than one byte, which is the lesson hiding in plain sight).
How to use
- Type text in the first box — the binary (UTF-8) appears instantly, one group of 8 bits per character.
- Paste binary code into the second box to decode it back into readable text.
- Note how many bytes emoji take compared to plain letters — that is UTF-8 in action.
Frequently asked questions
How does text become binary?
Each character is mapped to a number by the UTF-8 standard, and that number is written in base 2 (binary). The letter H is number 72, which is 01001000 in binary — one byte per character for plain English text.
Why do emoji take more bits than letters?
Emoji are characters outside the basic ASCII range, so UTF-8 encodes them as multiple bytes — often 4, or 32 binary digits. The converter shows this live: type one letter, then one emoji, and compare.
Can I decode binary I found online?
Yes, if it is standard space-separated 8-bit UTF-8 bytes like 01001000 01101001. The decoder is strict about grouping so partial bytes fail loudly instead of decoding to nonsense.
Is this the same as encryption?
No — binary is an encoding, not a cipher. Anyone can decode it. Encryption transforms data with a secret key; this simply shows the same text in a different notation.