Measurement Conversion Games Online Free
Convert between metric and US units of length, mass, capacity and time, in both directions.
Type answers on your keyboard, or tap the number pad.
Practise these again:
How do you convert units of measurement?
Learn how many small units are in one big unit, then multiply to go from big to small and divide to go from small to big. 1 m = 100 cm, so 3 m = 300 cm and 400 cm = 4 m.
Metric units go up in 10s, 100s and 1000s, so they use the same skills as multiplying by 10, 100 and 1000. US units like 12 inches in a foot use the times tables.
How to play Measurement Conversion
- Choose the 60-second challenge or untimed practice, then press Start.
- Type each answer on your keyboard or tap the number pad. It’s checked as soon as you’ve typed enough digits, or press ✓.
- Get one wrong and you’ll see the right answer, and the question comes back a little later.
- At the end, check your score and the facts to practise again.
Measurement Conversion skills
- Metric conversions (cm, m, km, g, kg, mL, L)
- US conversions (in, ft, yd, oz, lb)
- Time conversions (seconds, minutes, hours, days)
Level: Grades 3–5 (ages 8–11)
Tips for converting units
Big unit to small unit: multiply. Small unit to big unit: divide.
Kilo means 1000: 1 km = 1000 m, 1 kg = 1000 g. Centi means hundredth: 100 cm = 1 m.
Learn the US facts by heart: 12 in = 1 ft, 3 ft = 1 yd, 16 oz = 1 lb.
| 1 m | 100 cm |
|---|---|
| 1 cm | 10 mm |
| 1 km | 1000 m |
| 1 kg | 1000 g |
| 1 L | 1000 mL |
| 1 ft | 12 in |
| 1 yd | 3 ft |
| 1 lb | 16 oz |
| 1 hour | 60 minutes |
| 1 day | 24 hours |
Measurement Conversion questions and answers
Which units are in the game?
Centimetres, millimetres, metres, kilometres, grams, kilograms, millilitres, litres, inches, feet, yards, ounces, pounds, seconds, minutes, hours, days and weeks.
What grade learns measurement conversion?
Converting within one system is taught in grades 4 and 5 in the US Common Core, with simple metric facts from grade 3.