TechKnowSurge
CompTIA Tech+ 1.2
TechKnowSurge Catalog Arcade Decimal to Hex
ArcadeComputeFree

Decimal to Hex

Race the clock converting decimal values to hex.

Bomb Squad
Play now Bomb Squad Disarm the bomb — decode the problems before time runs out.
→
More ways to play
Meltdown Meltdown
⚑ Complete this arcade to capture a CTF flag worth 5 points.

About this arcade

Hex shows up constantly in real IT work — color codes, memory addresses, error codes — and the people who are fast at this conversion are the people who've actually drilled it, not just seen it once. This is that drill, timed.

Each round hands you a decimal value and starts the clock. Build fluency the same way you'd build it for any fast-recall skill: repetition, under a little pressure, until it's automatic.

What you'll learn

Aligned to

CompTIA Tech+
1.2 Identify notational systems.

Key terms

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.
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.
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

Decimal Hexadecimal Number Systems Data Representation

About TechKnowSurge

TechKnowSurge builds IT and cybersecurity professionals through hands-on, concept-first training built around real understanding — not memorization. Free interactive tools, structured programs, and 25+ years of real-world experience, all in one place.

Explore free tools and programs →