Text to Binary Converter
Convert text to binary code — or decode binary back into readable text — instantly and for free. Hexadecimal, octal and decimal are supported too, and everything runs privately in your browser.
How to convert text to binary
- Pick a direction. Choose Text → Binary to encode readable text into code, or Binary → Text to decode binary back into text.
- Type or paste your input. The result updates instantly in the box on the right. Switch the number base to hexadecimal, octal or decimal at any time.
- Copy or download. Use the copy button to grab the output, or download it as a text file. The swap button turns the output back into the input for round-trips.
About this tool
This free text to binary converter turns any message into the ones and zeros a computer actually stores, and reverses the process just as easily. Each character is encoded as its UTF-8 bytes, so accented letters, emoji and other Unicode symbols convert correctly and decode back exactly as they were — something simple character-code converters get wrong. Every byte becomes an 8-bit binary group, a two-digit hex pair, a three-digit octal value or a plain decimal number, depending on the base you choose.
It is handy for students learning how computers represent text, developers debugging encodings, and anyone curious about what a string looks like at the byte level. All conversion happens locally in your browser using the built-in TextEncoder and TextDecoder, so your text is never uploaded to a server and the tool keeps working even offline once the page has loaded.
Frequently asked questions
How is text converted to binary?
Your text is first encoded as UTF-8 bytes. Each byte is a number from 0 to 255, which is then written as an 8-bit binary group. For example, the letter “A” is byte 65, which is 01000001 in binary.
Does it handle emoji and accented characters?
Yes. Because it uses UTF-8, characters outside the basic ASCII range simply take more than one byte. A conversion round-trip (encode then decode) returns your original text unchanged, including emoji, accents and non-Latin scripts.
Why does my binary need to be a multiple of 8 digits?
Each byte is exactly 8 bits, so a valid binary string of whole bytes always has a length divisible by 8. If you get an error, check for a missing or extra digit. Spaces and commas between groups are ignored while decoding.
Is my text sent anywhere?
No. All encoding and decoding runs entirely in your browser with JavaScript. Nothing you type is uploaded, logged or stored, which makes the tool safe for private or sensitive text.