Binary ↔ Text Converter
Convert text to binary or binary back to text, using UTF-8 byte encoding.
Last updated
How to convert text to binary
- Type text, or paste binary as 8-digit groups separated by spaces.
- Click Text → Binary or Binary → Text.
- Click Copy result.
About this tool
Text is encoded as UTF-8 first, then each byte is written as 8 bits, space-separated — so a plain ASCII character like A becomes a single byte (01000001), while an emoji or accented letter becomes multiple bytes, exactly as it would be stored in a UTF-8 text file. Converting binary back to text expects the same format: 8-bit groups separated by spaces or line breaks.
Nothing you enter here is sent to a server — the entire tool runs as JavaScript in your browser tab.
Questions about binary code
What is “hello” in binary?
01101000 01100101 01101100 01101100 01101111: one 8-bit byte per letter.
How does text become binary?
Each character is given a number (A is 65), and the number is written in binary (01000001). This uses UTF-8, the standard for text on the web.
Why do emoji take more than 8 bits?
UTF-8 uses one byte for basic letters but two to four bytes for accented letters, other alphabets and emoji.
What format does Binary → Text need?
Groups of 8 ones and zeros, separated by spaces or line breaks.