Case Converter
Text to Binary
Convert text to binary code and back, instantly and UTF-8 accurate, right in your browser. No sign-up, free.
How to convert text to binary
Type your text
Or paste binary if you are decoding - the direction toggle switches instantly.
Read the output
Each character becomes its UTF-8 bytes as 8-bit groups: A is 01000001.
Copy the result
Grab the binary for homework, puzzles or protocols - or the decoded text.
Binary conversion questions, answered
How do I convert text to binary?
Type or paste your text and the 8-bit binary code appears instantly; paste binary to decode it back to text. Everything runs in your browser, so nothing is uploaded to a server.
Why do some characters produce more than 8 bits?
Characters beyond basic ASCII - accented letters, emoji - are encoded as multiple UTF-8 bytes, each shown as its own 8-bit group. That is exactly how computers store them.
What format does the decoder accept?
Groups of 8 bits. Spaces and line breaks between groups are ignored, so 01001000 01101001 and 0100100001101001 both decode to Hi.
Why does decoding fail sometimes?
The bit count must be a multiple of 8 and the bytes must form valid UTF-8. Anything else is flagged rather than silently mangled.