Measurement
Inch
The inch (symbol: in or ″) is a unit of length in the British imperial and the United States customary systems of measurement.
1 inch is 2.54 centimeters.
Foot
The foot (plural - feet, symbol: ft or ') is a unit of length in the British imperial and the United States customary systems of measurement.
1 foot is 30.48 centimeters.
Mile
The mile (symbol: mi) is a unit of distance in the British imperial and the United States customary systems of measurement.
1 mile is 1.61 kilometers.
Pound
The pound or pound-mass (symbol: lb) is a unit of mass in the British imperial and the United States customary systems of measurement.
1 pound is 0.45359237 kilograms.
Ounce
The ounce or ounce-mass (symbol: oz) is a unit of mass in the British imperial and the United States customary systems of measurement.
1 ounce is 28.349523125 grams (1/16 of pound).
Gallon
The gallon (symbol: US gal, US dry gal, imp gal) is a unit of volume in the British imperial and the United States customary systems of measurement.
1 US gallon is 3.785411784 litres, 1 US dry gallon is 4.40488377086 litres, 1 imperial gallon is 4.54609 litres.