Hexadecimal

overview

Summary

Hexadecimal is a base-16 numeral system that uses digits 0–9 and letters A–F to represent values compactly. It maps cleanly to binary because one hex digit equals four bits, making it ideal for reading and grouping raw data. Developers use hex for memory addresses, color codes, byte values, and compact identifiers. Understanding hex speeds up debugging, data inspection, and low-level reasoning without deep math.