The cubic foot (symbol ft3) 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 (0.3048 m) in length. Its volume is 28.3168 L (about 1⁄35 of a cubic metre).
|Unit system||Imperial and US Customary|
|Symbol||ft3 or cu ft|
|1 ft3 in ...||... is equal to ...|
|U.S. customary||1⁄27 yd3|
|SI units||0.02832 m3|
At 60 °F (16 °C), a cubic foot of water weighs 62.37 pounds (28.29 kg).
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|1 cubic foot||= 1728 cubic inches|
|= 1⁄27 of a cubic yard|
|≈ 0.037037 yd3|
|= 0.0283 m3|
|= 28.3168 L|
|= 576⁄77 US fluid gallons|
|= 1728⁄231 US fl gal|
|≈ 7.480519 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 abbreviationsEdit
The IEEE symbol for the cubic foot is ft3. 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 or HCF: Centum (Latin hundred) cubic feet; i.e., 100 ft3
- MCF: Mille (Latin thousand) cubic feet; i.e., 1000 ft3
- MMCF: Mille mille cubic feet; i.e., 1000000 ft3
- MMCFD: MMCF per day; i.e., 1000000 ft3/d
- Used in the oil and gas industry.
- BCF or 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.
- cu ft/s
- CFS or cfs
- cusec
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 measure of flow rate and is informal shorthand for "cubic feet per second" (28.317 litres per second). 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 = 0.028316847 m3⋅s−1 = 28.316847 L⋅s−1
- 1 cusec = 1.699 m3⋅min−1 = 1699 L⋅min−1
Cubic foot per minuteEdit
Standard cubic footEdit
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.
- 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
- "IEEE Standard Letter Symbols for Units of Measurement (SI Customary Inch-Pound Units, and Certain Other Units)" (PDF or hardcopy). ieee.org (Revision of IEEE Std 260.1-1993). IEEE Std 260.1-2004 (2004 ed.). Piscataway, N.J.: IEEE. 2004-09-24. pp. 1–30. doi:10.1109/IEEESTD.2004.94618. ISBN 978-1-5044-0928-5. STD95220 STDPD95220 STDPL95220. Retrieved 22 December 2019. , ISBN 978-0-7381-3997-5, ISBN 978-0-7381-3998-2.
- "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.