Cubic foot
Cubic foot | |
---|---|
Unit system | Imperial and US Customary |
Unit of | Volume |
Symbol | ft3 or cu ft |
Unit conversions | |
1 ft3 in ... | ... is equal to ... |
U.S. customary | 1⁄27 yd3 |
SI units | 0.02832 m3 |
The cubic foot (symbol ft3)[1] is an imperial and US customary (non-metric) unit of volume, used in the United States, and partially in Canada, and the United Kingdom. It is defined as the volume of a cube with sides of one foot (0.3048 m) in length. Its volume is 28.3168 liters or about 1⁄35 of a cubic meter.
At 60 °F (16 °C), a cubic foot of water weighs 62.37 pounds (28.29 kg).
Conversions[edit | edit source]
1 cubic foot | = 1728 cubic inches | |
= 1⁄27 of a cubic yard | ||
≈ 0.037037 cu yd | ||
= 0.0283 cubic meters | ||
= 28.3168 liters | ||
= 576⁄77 US fluid gallons | ||
= 1728⁄231 US fl gal | ||
≈ 7.4805 US fl gal | ||
= 73728⁄77 US fluid ounces | ||
≈ 957.51 US fl oz | ||
≈ 6.2288 imperial gallons | ||
≈ 996.61 imperial fluid ounces | ||
≈ 0.80356 US bushels | ||
≈ 0.17811 oil barrel |
Symbols and abbreviations[edit | edit source]
The IEEE symbol for the cubic foot is ft3.[1] The following abbreviations are used: cubic feet, cubic foot, cubic ft, cu feet, cu foot, cu ft, cu.ft, cuft, cb ft, 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:
- CCF
- HCF
- Centum, or hundred, cubic feet; i.e., 100 ft3. Latin centum meaning a hundred. Used in the billing of natural gas and water delivered to households.
- MCF
- Mille cubic feet; i.e., 1000 ft3. Latin mille meaning a thousand.
- MMCF
- Mille mille cubic feet; i.e., 1000000 ft3.
- MMCFD
- MMCF per day; i.e., 1000000 ft3/day. Used in the oil and gas industry.
- BCF
- TMC
- Billion, or thousand million cubic feet; i.e., 1000000000 ft3. TMC is usually used for referring to storage capacity and actual storage volume of storage dams.
- TCF
- Trillion cubic feet; i.e, 1000000000000 ft3. Used in the oil and gas industry.
Cubic foot per second[edit | edit source]
The IEEE symbol for the cubic foot per second is ft3/s.[1] The following abbreviations are used:
- cu ft/s
- ft3/sec
- CFS or cfs
- cusec[citation needed]
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 meters per second.
Cusec is a measure of flow rate and is informal shorthand for "cubic feet per second"[2] (28.317 litres per second).[2] In the United States it is generally applied to water flow, particularly in rivers and canals. Other informal synonyms are cfs and second-feet.
- 1 ft3s−1 = 0.028316847m3s−1, 1 ft3s−1 = 1 cusec
- 1 ft3s−1 = 28.316847 litre s−1, 1 cubic foot per minute = 1 cufm
- 1 cusec = 1.699 m3min−1, 1 cusec = 1699 litres min−1
- 1 gallon per minute = 0.07577 litre s−1, 1 gallon per minute = 7.577x10-5 m3s−1
(These are UK not US gallons: 1 imperial gallon = 1.201 US gallons)
Cubic foot per minute[edit | edit source]
The IEEE symbol for the cubic foot per minute is ft3/min.[1] The following abbreviations are used:
- CFPM
- CFM
Cubic feet per minute is used to measure the amount of air that's being delivered and is a common metric used for carburetors, [3] pneumatic tools, and air compressor systems.[4]
Standard cubic foot[edit | edit source]
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.[citation needed]
See Also: Standard cubic foot per minute
See also[edit | edit source]
- Board foot
- Conversion of units
- Cord (unit)
- Cube (arithmetic), cube root
- Cubic inch
- Cubic yard
- Orders of magnitude (volume) for a comparison with other volumes
- Square foot
- Therm, a unit of natural gas approximately equal to 100 cubic feet
- cubic metre per second
References[edit | edit source]
- ^ a b c d "260.1-2004 - IEEE Standard Letter Symbols for Units of Measurement (SI Customary Inch-Pound Units, and Certain Other Units)". standards.ieee.org. Retrieved 22 December 2019.
- ^ a b "Units: C", The University of North Carolina at Chapel Hill, webpage: UNC-Rowlett.
- ^ ""Carburetor CFM Racing"". "Summit Racing". Retrieved 2019-02-07.
- ^ "Easy Guide To Rotary Screw Air Compressors For Vehicles – By VMAC". VMAC. 2018-10-16. Retrieved 2018-10-30.
External links[edit | edit source]
- Cubic foot at Wikipedia, the free Terran-based encyclopedia that anyone can edit.