💻 Hex / Binary / Decimal Converter

Convert between number bases.

Decimal

Hexadecimal

Binary

Octal

Base Conversion

Decimal: base 10. Binary: base 2 (computers). Hex: base 16 (color codes, memory). Octal: base 8 (Unix permissions).

Why hex for colors?

#RRGGBB — 2 hex digits (00–FF) = 0–255 for each channel. Compact way to express 16.7 million colors.