Convert text to binary and binary to text instantly with our free Binary Code Translator.
This Binary Code Translator converts text into binary, and binary back into text, using the same character encoding your browser and operating system already use. Nothing is sent to a server. The conversion happens in a few lines of JavaScript running on your own device, so you can paste in a password, a private note, or a school assignment without worrying about where the data goes.
Computers store everything as electrical signals that are either on or off. There is no native way to store the letter "A" in hardware — only two states, usually written as 1 and 0. Binary code is simply a way of writing numbers using only those two digits, instead of the ten digits (0 through 9) we use in everyday decimal counting.
To store text, computers first assign every character a number. The letter "A" is the number 65. A space is 32. A lowercase "a" is 97. This mapping is called a character encoding, and the one used almost everywhere on the modern web is called UTF-8. Once a character has a number, that number gets written in binary, usually padded out to a full byte — 8 binary digits, or "bits" — so computers can process it in fixed-size chunks.
That's why this Binary Code Translator groups its output into 8-digit blocks separated by spaces. Each block is one byte, and each byte is one character (for common English text; some symbols and non-Latin characters need two or more bytes, which is normal for UTF-8 and this translator handles it correctly).
Take the word "Hi". The letter "H" has the character code 72, and "i" has the character code 105. Converting each number to base-2 gives 01001000 for "H" and 01101001 for "i". Put them together with a space and you get 01001000 01101001, which is exactly what this Binary Code Translator will show you if you type "Hi" into the text field above.
Reading it back is the same process in reverse: split the binary string into 8-digit groups, convert each group from base-2 back to a decimal number, then look up which character that number represents. That round trip is exactly what happens when you switch this tool from "Text to Binary" to "Binary to Text".
Binary-to-decimal conversion is one of the first topics in most introductory CS courses. Typing in a word and checking the binary output against your own hand-worked math is a fast way to confirm you understand the conversion, rather than just memorizing a procedure.
Explaining character encoding is easier with a real, checkable example on screen instead of a static textbook table. This translator lets you generate a fresh example for any word during a lesson without doing the arithmetic by hand.
Binary strings are a common cipher layer in puzzle hunts and escape rooms. This tool generates a correct binary clue from any phrase, and lets you verify a player's decoded answer matches exactly.
If you've ever seen a string of 1s and 0s online and wondered what it says, pasting it into this translator gives you a direct, honest answer instead of a guess.
This is a straightforward text-to-binary encoder, not an encryption tool. Binary is a different way of writing the same characters — it provides no security or privacy on its own, since anyone who knows the encoding (which is public and standardized) can decode it in seconds. Don't rely on binary encoding to protect sensitive information; use it for learning, puzzles, and understanding how computers represent text.
It also won't convert binary that represents something other than text, such as a compiled program or an image file. If you paste in binary that doesn't correspond to valid UTF-8 text, the decoder will either skip the invalid bytes or produce garbled output, because there is no matching character to display.
A group of 8 binary digits is called a byte, and a byte can represent 256 different values (0 to 255) — enough to cover every letter, digit, and common symbol in the basic ASCII character set. Modern computers process memory in byte-sized chunks, so text is conventionally written and read in 8-bit groups.
Yes. It uses UTF-8, the encoding that covers virtually every written language, including accented letters, Chinese, Japanese, Korean, Arabic, and emoji. Characters outside the basic ASCII range take up more than one byte, which is normal and expected — the decoder reassembles them correctly.
No. The conversion runs entirely in your browser using standard JavaScript text-encoding APIs. Nothing you type is transmitted, logged, or stored — closing the tab clears it completely.
This usually means the binary string doesn't split evenly into valid 8-bit bytes, or one of the byte values doesn't correspond to a printable character. Double-check that each group has exactly 8 digits and that groups are separated by single spaces, matching the format this translator produces when encoding text.
Not quite. Machine code is binary, but it represents processor instructions, not text — a completely different meaning applied to the same 1s and 0s. This translator deals specifically with text encoding, converting readable characters to their binary representation and back, not executable instructions.