## The Metric System

 Length Mass Volume & Capacity 1cm = 10 mm 1 gram = 1000 mg 1 litre = 1000 ml 1 metre = 100 cm 1kg = 1000 grams 1 litre = 1000 cm³ 1 metre = 1000 mm 1 tonne = 1000 kg 1 ml = 1 cm³ 1 km = 1000 metres

## The Imperial System

 Length Mass Volume & Capacity 1 foot = 12 inches 1 pound = 16 ounces (oz) 1 gallon = 8 pints 1 yard = 3 feet 1 stone = 14 pounds (lb)

## Approximate Conversions between Imperial & Metric Systems

 Length Mass Volume & Capacity 1 foot ≈ 30cm 1 pound (lb) ≈ 1/2 kg 1 gallon ≈ 4 1/2 litres 1 mile ≈ 8/5 km 1kg ≈ 2 1/4 pounds 1 pint ≈ 1/2 litre 5 miles ≈ 8km