Binary Code Translator

This binary translator works as both a text to binary converter and a binary to text converter in one tool. Type or paste content on the left and the translation appears instantly on the right. Each character is encoded as UTF-8 bytes, then each byte is shown as 8 binary digits — ASCII characters like the letter A become a single byte (01000001), while accented letters and emoji produce multiple bytes. Use the swap button to switch direction and translate binary back to text. Everything runs in your browser; nothing you type is ever sent to a server.

How do I convert text to binary code?

Type or paste your text in the left panel and the binary code appears on the right automatically, with each byte separated by a space for readability. For example, “Hi!” in binary is 01001000 01101001 00100001. To convert binary back to text, click the swap button to switch direction, then paste your binary code into the left panel.

What is binary code and how does it work?

Binary code is a base-2 number system that represents data using only two digits: 0 and 1. Every character has a corresponding numeric value defined by the ASCII/Unicode standard, and that number can be expressed as a sequence of eight binary digits (a byte). For example, the uppercase letter A has a value of 65, which is 01000001 in binary. Computers process all information this way at the hardware level, since electronic circuits naturally represent two states: on and off.

Why do some characters take up more than 8 bits?

Plain ASCII characters (English letters, digits, basic punctuation) each fit in a single byte. But most text on the web is encoded as UTF-8, which uses more bytes for characters outside that basic set: an accented letter like é needs 2 bytes, and most emoji need 4. That's why pasting the same number of characters can sometimes produce very different lengths of binary — this tool encodes the true UTF-8 byte sequence rather than assuming every character fits in one byte, so accented text and emoji translate correctly in both directions.

Why did I get unexpected characters when decoding?

Binary decoding reads whatever valid 0s and 1s it finds and turns them back into bytes, rather than rejecting input that isn't perfectly formed. If you paste text that isn't real binary, or a byte gets cut short, you'll get unexpected or garbled characters instead of an error message — so if the output looks wrong, double-check that what you pasted is actually binary code and that every byte has its full 8 digits.

Last reviewed: August 2026