|Unit system||Imperial and US Customary|
|Symbol||ft3 or cu ft|
|US Customary||1728 in3|
|SI units||0.02831685 m3|
The cubic foot (symbol ft3 or cu ft) is an imperial and US customary (non-metric) unit of volume, used in the United States and the United Kingdom. It is defined as the volume of a cube with sides of one foot in length. Its volume is (about 1⁄35 of a cubic metre).
At 60 °F (16 °C), a cubic foot of water weighs 62.37 pounds (28.29 kg).
|1 cubic foot||= 1728 cubic inches|
|= 1⁄27 of a cubic yard|
|= 576⁄77 US fluid gallons|
|? US fl gal|
|= 73728⁄77 US fluid ounces|
|? US fl oz|
|? 6.2288 imperial gallons|
|? 996.61 imperial fluid ounces|
|? 0.80356 US bushels|
|? 0.17811 oil barrel|
The IEEE symbol for the cubic foot is ft3. The following abbreviations are used: cubicfeet, cubicfoot, cubicft, cufeet, cufoot, cuft, cu.ft, cuft, cbft, cb.ft, cbft, cbf, feet3, foot3, ft3, feet/-3, foot/-3, ft/-3.
Larger multiples are in common usage in commerce and industry in the USA:
The flow or discharge of rivers, i.e., the volume of water passing a location per unit of time, is commonly expressed in units of cubic feet per second or cubic metres per second.
Cusec is a unit of flow rate, used mostly in the United States in the context of water flow, particularly of rivers and canals.
Conversions: 1 ft3s-1 = 0.028316847 m3?s-1 = 28.316847 L?s-1 = 1.699 m3?min-1 = 1699 L?min-1
A standard cubic foot (abbreviated scf) is a measure of quantity of gas, sometimes[clarification needed] defined in terms of standard temperature and pressure as a cubic foot of volume at 60 degrees Fahrenheit (15.56 °C; 288.71 K) and 14.7 pounds per square inch (PSI) (1.01 bar; 101.35 kPa) of pressure.