Speed Unit Sprint
Speed limits, sprint times, and speedometers all speak different units. Convert each speed to the target unit before the timer hits zero.
60-second Unit Race
Convert units against the clock!
How to play
Press Start to begin the 60-second timer.
A value and its unit appear, with a target unit to convert to.
Type the converted number and press Enter.
Answers within 2% count as correct. Wrong answers cost 5 seconds.
Scoring
Each correct conversion scores 100 points plus a speed bonus up to 50 points. Wrong answers cost 5 seconds. Chain 5 correct in a row for a streak bonus of 100.
Levels
Warm-up round
m/s and km/h only. Master the 3.6 factor.
Speed run
mph and knots join in. Beat your best score.
What physics did you just use?
You just drilled speed conversions: 1 m/s = 3.6 km/h, and 1 mph ≈ 0.447 m/s. These factors hide in every car spec sheet and weather report. Getting them automatic means never being fooled by a number in unfamiliar units again.
Key concepts
- Speed units
- Conversion factors
- Dimensional consistency