Text to binary converter
Translate text into 8-bit binary code and decode binary back to text.
How to use
- Pick a direction: Text → Binary or Binary → Text.
- Paste your text, or your binary groups separated by spaces.
- Copy the result — encoding produces one 8-bit group per byte.
Frequently asked questions
Why do some characters produce two or more binary groups?
Each group is one byte. Characters outside basic ASCII — é, 日, emoji — take several bytes in UTF-8, so they produce several groups.
What happens if my binary contains a typo?
The decoder points out the exact invalid group (anything that is not 1–8 binary digits) so you can correct it.
Can it decode binary without spaces?
Groups need separators (spaces or new lines). Unbroken streams are ambiguous because byte boundaries cannot be guessed safely.
About this tool
Under the hood, every letter you type is stored as numbers — and binary is those numbers in their rawest form. This tool shows exactly that: each character becomes the 8-bit binary of its UTF-8 bytes, so "A" is 01000001. It is popular for classroom demonstrations of how computers store text, for puzzle and escape-room design, and for decoding binary strings found in CTF challenges or social media riddles. Decoding accepts groups separated by spaces or line breaks and tells you precisely which group is invalid instead of failing silently. Multibyte characters like é and emoji are handled correctly through real UTF-8 encoding.