English System
Units of Length
Inch = 2.54 cm.
Foot = 12 inches = 30.48 cm.
Yard = 3 feet = 91.44 cm.
Fathom = 2 yards = 1.829 m.
Statute mile = 880 fathoms = 1.609 km.
Nautical mile = 1,852 m.
Units of Capacity
Pint (UK) = 0.568 litres
Pint (U.S.) = 0.473 litres
Barrel = 159 litres
Units of Mass
Ounce = 28.3 grams
Pound = 454 grams
Units of Area
Acre = 4,047 m².
