| cubic foot | |
| Standard: | Imperial and US Customary |
| Quantity: | Volume |
| Symbol: | ft3 |
| Symbol2: | cu ft |
| Units1: | US Customary |
| Inunits1: | 1728 in3 yd3 |
| Units2: | SI units |
| Inunits2: | 1ft3 |
The cubic foot (symbol ft3 or cu ft)[1] 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 of a cubic metre).
| valign=top rowspan=14 | 1 cubic foot | = 1728 cubic inches | |
| = of a cubic yard | |||
| width=15pt | ≈ yd3 | ||
| = m3 | |||
| = L | |||
| = US fluid gallons | |||
| ≈ US fl gal | |||
| = 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, feet, foot, ft, feet/-3, foot/-3, ft/-3.
Larger multiples are in common usage in commerce and industry in the United States:
The IEEE symbol for the cubic foot per second is ft3/s. The following other abbreviations are also sometimes used:
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,[2] used mostly in the United States in the context of water flow, particularly of rivers and canals.
Conversions: 1 ft3s−1 = = = =
The IEEE symbol for the cubic foot per minute is ft3/min. The following abbreviations are used:
Cubic feet per minute is used to measure the amount of air that is being delivered, and is a common metric used for carburettors,[3] pneumatic tools, and air-compressor systems.[4]
See main article: Standard cubic foot.
See also: Standard cubic foot per minute. A standard cubic foot (abbreviated scf) is a measure of quantity of gas, sometimes defined in terms of standard temperature and pressure as a cubic foot of volume at 60 degrees Fahrenheit (602NaN2) and 14.7 pounds per square inch (PSI) (14.7psi) of pressure.