About this interactive
What you're seeing: a guided walkthrough that turns a hex value into decimal one column at a time. Why it matters: hex-to-decimal is the same collect-and-sum move as binary-to-decimal, just with sixteen possible digit values and place values that are powers of 16 instead of 2 — and it's the conversion that turns memory addresses, error codes, and color values back into numbers you recognize. How to use it: step through the columns in Guided mode collecting each digit's product, then switch to Solo to read the hex value and enter the decimal yourself.
What you'll learn
- Convert a hex value to decimal by multiplying each hex digit by its place value and summing the results
Aligned to
CompTIA Tech+
1.2
Identify notational systems.
Key terms
- Hexadecimal
Hex
- A base-16 number system using digits 0–9 and letters A–F; each hex digit maps to exactly 4 bits, making it a compact shorthand for representing binary data.
- Decimal
- The base-10 number system using digits 0–9; the standard system used in everyday counting and arithmetic, and the most common format for presenting numeric output to humans.
- Nibble
- A group of exactly 4 bits, equivalent to one hexadecimal digit; two nibbles make up one byte.
- Place Value
- The weight assigned to a digit based on its position within a number; in binary, each position represents a successive power of 2 (1, 2, 4, 8, …), making position the key to decoding binary values.
Topics
Hexadecimal
Decimal
Number Systems
Data Representation
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