How to use
- Type text on the left to see it in binary on the right.
- Or paste binary on the right — with or without spaces — to read the message.
- Choose a separator and copy the result.
Options explained
- Separator
- Space separates each 8-bit byte. With None, the bits run together; when decoding, a continuous string is split into groups of 8.
Examples
| Text | Binary |
|---|---|
| Hi | 01001000 01101001 |
| A | 01000001 |
| é | 11000011 10101001 |
Frequently asked questions
How is text turned into binary?
Each character is encoded as UTF-8 bytes, and each byte is written as 8 binary digits. The letter H is byte 72, which is 01001000.
Why do some characters take more than 8 bits?
UTF-8 uses one byte for English letters and digits, two for accented letters, three for most Chinese characters and four for emoji.
Can I convert to decimal or hex instead?
Yes. Switch the number base to hex, decimal or octal above the text boxes.
Privacy
This tool runs entirely in your browser. Your files and text are processed on your device and are never uploaded to our servers.