💻Text to Binary Converter
Convert text to binary, hex, or decimal bytes — and back — live, with full Unicode support.
Free text to binary converter
Ever wondered what your words look like to a computer? Our free text to binary converter shows you instantly. Type any text and watch it become binary — each character encoded as its UTF-8 bytes — or paste a string of 1s and 0s and decode it straight back to readable text. Both directions update live as you type.
It's more than a novelty. Switch the output between binary, hexadecimal, and decimal bytes to see the same data three ways, and because it uses real UTF-8 encoding, everything from plain letters to accents and emoji converts correctly and round-trips perfectly. Invalid binary gets a clear error rather than garbage, and a byte counter shows exactly how much data your text occupies.
Simply enter text or binary to convert instantly. No sign-up, no downloads, no limits.
About the Text to Binary Converter
Features
Bidirectional
Text and binary/hex/decimal each update the other live.
Three output formats
View the same bytes as binary, hexadecimal, or decimal.
Full Unicode support
Correct UTF-8 handling for accents, scripts, and emoji.
Byte count
See exactly how many bytes your text occupies.
Input validation
Clear errors for malformed binary, hex, or UTF-8 sequences.
One-click copy
Copy either the text or the encoded output.
How text becomes bytes
Computers only store numbers, so text needs an agreed-upon encoding to become bytes. This tool uses UTF-8, the encoding behind most of the modern web, via the browser's built-in TextEncoder and TextDecoder. Basic English letters and digits map to a single byte each, while accented letters, other scripts, and emoji use two to four bytes — which is why longer text with special characters can occupy more bytes than characters.
Frequently Asked Questions
How does the text to binary converter work?
Type text into the text box and it's instantly encoded as UTF-8 bytes shown in binary, hex, or decimal. Paste binary, hex, or decimal bytes into the other box and it's decoded straight back to text. Both directions update live as you type.
Is it free?
Yes, completely free with no sign-up and no limits.
What encoding does it use?
UTF-8, the standard encoding used across the web. Each character becomes one or more bytes depending on the character — plain English letters take one byte, accented letters and many other scripts take two or three, and emoji typically take four.
Why do emoji use several bytes?
UTF-8 represents each character using between 1 and 4 bytes depending on its Unicode code point. Emoji live at high code points, so most take 4 bytes each, while basic English letters and digits take just 1.
How does binary to text conversion work?
The binary input is split into 8-bit groups (bytes), each converted from binary to its numeric value, and the resulting byte sequence is decoded as UTF-8 back into readable text.
What are the hex and decimal modes for?
They show the exact same underlying bytes in a different base — hexadecimal (base 16) or decimal (base 10) instead of binary (base 2). Useful if you're working with byte data in a programming context that uses hex or decimal.
What happens if my binary input is invalid?
You'll see a clear error message explaining exactly what's wrong — such as a byte group that isn't 8 bits, or a value outside the valid range — instead of garbled or silently wrong output.
How is this different from the ASCII / Unicode converter?
The ASCII / Unicode converter shows the code, hex, and binary for individual characters one at a time. This tool converts whole strings of text to and from continuous binary, hex, or decimal byte streams in both directions.
Is any of my data stored or sent anywhere?
No. All conversion happens locally in your browser using the built-in TextEncoder and TextDecoder APIs. Nothing is sent to a server, stored, or logged.
Does it work on mobile?
Yes, the tool is fully responsive and works on any modern phone, tablet, or desktop browser.