1 cm = 0.39 inches
1 metre = 3.28 feet / 1.09 yards
1 km = 0.62 miles
1 litre = 0.26 gallons (USA) / 0.22 gallons (UK)
1 inch = 2.54 cm
1 foot = 0.39 metres
1 yard = 0.91 metres
1 mile = 1.6 km
1 gallon (USA) = 3.78 litres
1 gallon (UK) = 4.54 litres