ASCII Text to Binary Converter

ASCII assigns every English letter, digit and punctuation mark a number from 0 to 127 — 'A' is 65, 'a' is 97, space is 32, and so on. This tool takes text, looks up each character's ASCII (or UTF-8, for characters beyond ASCII) code point, and writes that number out as an 8-bit binary byte.

'H' is ASCII 72, and 72 in binary is 01001000 — the first byte in the example below.

Where this comes up

• Computer science coursework on character encoding and binary representation
• Puzzle hunts, escape rooms and ARGs that encode a hidden message as binary
• Understanding how plain text is actually stored and transmitted at the byte level