Unit Conversion Trainer
Quick, fun drills to build “instant conversion” intuition.
Impress your friends and family with your unit conversion skills.
Become the person who can casually convert kg↔lb, km↔mi, °C↔°F and more — without fumbling for a look-up. It’s a tiny skill that makes you look like a real numbers whiz. Because, really — all great wizards master transmutation.
How it works: pick a conversion, then you get 5 rounds. You have 10 seconds each. Your score is your average percent error across rounds — lower is better.
How to do this conversion (quick mental tricks)
Need a quick lookup? Select the conversion mode and enter a value you wish to convert below.
Or get a general sense of how the scales compare in the reference tables below.