Units of length | Units of mass |
1 km = 1000 m | 1 tonne = 1000 kg |
1 m = 100 cm | 1 kg = 1000 g |
1 cm = 10 mm | 1 g = 1000 mg |
Units of length | Units of mass |
1 foot (ft) = 12 inches (in) | 16 ounces (oz) = 1 pound (lb) |
3 feet = 1 yard (yd) | 14 pounds = 1 stone (st) |
1760 yards = 1 mile | 112 pounds = 1 hundredweight (cwt) |
20 hundredweight = 2240 pounds = 1 ton |
Rough equivalence between metric and imperial units
1 kg ≈ 2.2 lb (or use 2 lb for a rougher estimate)
1 tonne ≈ 1 ton
1 metre ≈ 39 inches ( or use 1 m ≈ 1 yard for a rougher estimate)
1 km ≈ \( \frac{5}{8} \) mile, or 1 mile ≈ 1.6 km