Ever stared at a decimal number (like 255) and thought, “How do I turn this into hex?” Don’t worry—this isn’t just for math whizzes. We’ll break down exactly how decimal-to-hex conversion works, step by step, with real examples. No confusing formulas, just simple division and remainders.
Let’s take 255 as a simple example—here’s how it becomes hex:
255 ÷ 16 = 15 (with a remainder of 15) → That remainder 15 is "F" in hex 15 ÷ 16 = 0 (with a remainder of 15) → Another "F" Flip the remainders, and you get: FF
See? It’s just dividing by 16, keeping track of what’s left, and then translating those remainders to hex letters (A-F) when they’re 10 or higher.
Negative numbers work a bit differently—we use something called "two's complement." Let’s take -42:
First, find 42 in hex: that's 0x2A Then, calculate its two's complement (for 8-bit systems): D6
This method lets computers understand negative values in hex, which is super useful for coding and electronics.
Our converter isn’t just for basic numbers—it’s built to handle the tricky stuff too. Whether you’re working with huge values, negative numbers, or need to convert a whole list at once, these features save you time and headaches.