Text to Binary Converter — Binary, Hex, Octal, Decimal
Convert text to binary, hexadecimal, octal, or decimal. Decode binary back to text. Free online converter.
Binary
01001000 01100101 01101100 01101100 01101111 00100001
Hexadecimal
48 65 6C 6C 6F 21
Octal
110 145 154 154 157 041
Decimal
72 101 108 108 111 33
How Text-to-Binary Works
Each character has a numeric value (ASCII/Unicode code point). This number is then converted to its binary (base 2), hexadecimal (base 16), octal (base 8), or decimal representation. For example, "A" = 65 = 01000001 in binary.
ASCII Table Basics
ASCII uses 7 bits (0-127) for English letters, digits, and symbols. Extended ASCII uses 8 bits (0-255). Unicode extends this to support all world languages and emoji.