Text to Binary

A text to binary converter rewrites ordinary text as the 1s and 0s a computer actually stores. Every character has a numeric code (its ASCII/Unicode code point), and that number written in base 2 is its binary form: the letter A is code 65, which in binary is 01000001. The word "Hi" becomes 01001000 01101001.

Standard English characters fit in 8 bits (one byte), which is why binary text is usually shown as groups of eight digits. This tool pads each character to 8 bits and separates characters with spaces — the conventional format used in classrooms, puzzles and geeky T-shirts alike.

Type or paste any text and this tool instantly outputs its binary representation, character by character — no button to press, and the result is one click to copy.

People use it to learn how character encoding works, to build classroom exercises and escape-room puzzles, to craft "binary" messages for designs and tattoos, or to double-check byte-level output while debugging. It handles full Unicode, so accented letters and emoji convert too (they simply produce codes longer than 8 bits — é is 11101001, and 😀 is a hefty 11111011000000000).

Everything runs in your browser as you type; your text is never uploaded. Pair it with our Binary to Text converter to decode messages in the other direction.