Metric Units

Weights

1 tonne = 1000 kilogrammes (kg)
1 kilogramme (kg) = 100 hectogrammes (hg) = 1000 grammes (g)
1 gramme (g) = 1000 milligrammes (mg)

Lengths

1 kilometre (1 km) = 1000 metres
1 metre (1 m) = 10 decimetres (dm) = 100 centimetres (cm) = 1000 millimetres (mm)

Volumes

1 cubic metre (1 m³) = 1000 litres (l)
1 litre (1 l) = 10 decilitres (dl) = 100 centilitres (cl) = 1000 millilitres (ml)
1 litre (1 l) = 1 cubic decimetre (1 dm³)
1 millilitre (1 ml) = 1 cubic centimetre (1 cm³)