Binary output is UTF-8 bytes separated by spaces (e.g. 01001000 01101001). Hex output is lowercase bytes separated by spaces (e.g. 48 69). This tool works entirely in your browser.
Convert text to binary and back, or text to hexadecimal and back, using UTF-8 encoding. Handles emoji and non-Latin characters correctly.
Everything runs locally in your browser — nothing is sent to a server.
Each character is converted to its UTF-8 representation — a sequence of one to four bytes — and each byte is written as eight binary digits. For example, the letter A is 01000001.
UTF-8 uses one byte for ASCII characters, two bytes for most Latin-script letters and non-Latin alphabets, and three to four bytes for emoji and rare characters. A single emoji can be 24 or 32 binary digits.
They are two ways to write the same bytes. Each byte is 8 binary digits but only 2 hexadecimal digits, because each hex digit represents exactly 4 bits. Hex is more compact and easier to read for humans.