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Binary and Hex for Programmers

By SKUWRJ Team | Updated 2025

Speaking Computer

When I first started learning to code, binary and hexadecimal numbers completely confused me. Why would anyone want to write numbers as a bunch of 0s and 1s? Wasn't decimal good enough?

Well, it turns out computers think in binary, and hex is a compact way to represent binary data. Once I understood that, everything clicked.

When Do You Actually Use This?

Hex is everywhere in programming - color codes in CSS (#FF0000 is red!), memory addresses, error codes. And binary? That's more for understanding how computers work at a deep level.

These days I use converters to quickly check what a hex color converts to in RGB, or what a binary number means in decimal. Super handy!