Number Base

A number base converter transforms numbers between different numeral systems: decimal (base 10), binary (base 2), octal (base 8), and hexadecimal (base 16).

Computers use binary because electronic circuits have two states: on (1) and off (0). All data and instructions are ultimately represented in binary.

Hexadecimal uses 0-9 and A-F (10-15). Each hex digit represents 4 binary bits. Example: FF = 1111 1111 = 255 in decimal.