# Cubic foot

The **cubic foot** (symbol **ft ^{3}**)[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.

Cubic foot | |
---|---|

Unit system | Imperial and US Customary |

Unit of | Volume |

Symbol | ft^{3} or cu ft |

Conversions | |

1 ft^{3} in ... | ... is equal to ... |

Imperial and US customary | ^{1}⁄_{27} yd^{3} |

SI units | 0.02831685 m^{3} |

At 60 °F (16 °C), a cubic foot of water weighs 62.36630 pounds (28.28888 kg).

## Conversions

1 cubic foot | = 1728 cubic inches | |

= ^{1}⁄_{27} of a cubic yard | ||

≈ 0.037037 cu yd | ||

= 0.028316846592 cubic meters | ||

= 28.316846592 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

The IEEE symbol for the cubic foot is ft^{3}.[2] 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, feet^{3}, foot^{3}, ft^{3}, 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 ft
^{3}. Latin*centum*meaning*a hundred*. Used in the billing of natural gas and water delivered to households. - MCF
- Mille cubic feet; i.e., 1000 ft
^{3}. Latin*mille*meaning*a thousand*. - MMCF
- Mille mille cubic feet; i.e., 1000000 ft
^{3}. - MMCFD
- MMCF per day; i.e., 1000000 ft
^{3}/day. Used in the oil and gas industry. - BCF
- TMC
- Billion, or thousand million cubic feet; i.e., 1000000000 ft
^{3}. TMC is usually used for referring to storage capacity and actual storage volume of storage dams. - TCF
- Trillion cubic feet; i.e, 1000000000000 ft
^{3}. Used in the oil and gas industry.

## Cubic foot per second

The IEEE symbol for the cubic foot per second is ft^{3}/s.[3] The following abbreviations are used:

- cu ft/s
- ft
^{3}/sec - 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 meters per second.

*See also cubic metre per second*

## Cubic foot per minute

The IEEE symbol for the cubic foot per minute is ft^{3}/min.[4] 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, [5] pneumatic tools, and air compressor systems.[6]

## Standard cubic foot

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 (15.56 °C; 288.71 K) and 14.7 pounds per square inch (PSI) (1.01 bar; 101.35 kPa) of pressure.

* See Also:* Standard cubic foot per minute

## See also

- 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

## Notes

- IEEE Std 260.1-2004
- IEEE Std 260.1-2004
- IEEE Std 260.1-2004
- IEEE Std 260.1-2004
- ""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.