mm = millimetre | cm = centimetre |
m = metre |
km = kilometre |
1 cm = 10 mm (one centimetre = ten millimetres) |
1 m = 100 cm (one metre = hundred centimetres) |
1 km = 1000 m (one kilometre = one thousand metres) |
1 km = 1000 000 mm (one kilometre = one million millimetres) |
1000 km = 1000 000 000 mm (one thousand kilometres = one billion millimetres) |