Number Base Converter

All positional number systems work on the same principle: each digit is multiplied by its base raised to its position. Decimal uses digits 0–9 (base 10), hexadecimal adds A–F (base 16), binary uses only 0–1 (base 2), octal uses 0–7 (base 8). The ASCII character next to the decimal value is a quick reference for codepoint lookups.