# Cubic foot > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Cubic_foot > Markdown URL: https://mediated.wiki/source/Cubic_foot.md > Source: https://en.wikipedia.org/wiki/Cubic_foot > Source revision: 1348755167 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Imperial and US customary (non-metric) unit of volume cubic foot Gas meter with volume measured in cubic feet General information Unit system Imperial and US Customary Unit of Volume Symbol ft3, cu ft Conversions 1 ft3 in ... ... is equal to ... US Customary 1728 in3 ⁠1/27⁠ yd3 SI units 0.028316846592 m3 The **cubic foot** (symbol **ft3** or **cu ft**)[1] is an [imperial](/source/Imperial_unit) and [US customary](/source/United_States_customary_units) (non-metric) [unit of volume](/source/Unit_of_volume), used in the United States and the United Kingdom. It is defined as the volume of a [cube](/source/Cube) with sides of one [foot](/source/Foot_(length)) (0.3048 m) in [length](/source/Length), or exactly 28.316846592 L (which differs by about 1% from ⁠1/35⁠ of a [cubic metre](/source/Cubic_metre), making that a suitable approximation in many cases). ## Conversions 1 cubic foot ≡ 1728 cubic inches ≡ ⁠1/27⁠ of a cubic yard ≡ 28.316846592 L ≡ ⁠7+37/77⁠ US gallons ≡ ⁠957+39/77⁠ US fluid ounces ≈ 6.228835 imperial gallons ≈ 996.6137 imperial fluid ounces ≡ ⁠86400/107521⁠ US bushels ≈ 0.7786044 imperial bushels ≡ ⁠96/539⁠ oil barrel ## Symbols and abbreviations The [IEEE](/source/Institute_of_Electrical_and_Electronics_Engineers) 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.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*] Larger multiples are in common usage in commerce and industry in the United States: - CCF or HCF: [*Centum*](https://en.wiktionary.org/wiki/centum#Latin) (Latin hundred) cubic feet; i.e., 100 ft3 (2.8 m3) - Used in the [billing](/source/Bill_(payment)) of [natural gas](/source/Natural_gas) and [water supply](/source/Water_supply) delivered to households. - MCF: [*Mille*](https://en.wiktionary.org/wiki/mille#Latin) (Latin thousand) cubic feet; i.e., 1,000 ft3 (28.3 m3) - MMCF: Mille mille (= million) cubic feet; i.e., 1,000,000 ft3 (28,320 m3) - MMCFD: MMCF per day; i.e., 1,000,000 cu ft/d (28,000 m3/d) - Used in the [oil and gas industry](/source/Oil_industry). - BCF or TMC: Billion or thousand million cubic feet; i.e., 1,000,000,000 ft3 (28,320,000 m3) - [TMC](/source/Tmcft) is usually used for referring to storage capacity and actual storage volume of storage dams. - TCF: Trillion cubic feet; i.e., 1,000,000,000,000 ft3 (2.8×1010 m3) - Used in the oil and gas industry. ## Cubic foot per second and related flow rates The [IEEE](/source/Institute_of_Electrical_and_Electronics_Engineers) symbol for the cubic foot per second is ft3/s.[1] The following other abbreviations are also sometimes used: - ft3/sec - cu ft/s - cfs or CFS - cusec - second-feet The flow or [discharge](/source/Discharge_(hydrology)) 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 ft3/s = 0.0283168 m3/s = 28.3168 L/s = 1.699011 m3/min = 1,699.011 L/min ### Cubic foot per minute The [IEEE](/source/Institute_of_Electrical_and_Electronics_Engineers) symbol for the cubic foot per minute is ft3/min.[1] The following abbreviations are used: - cu ft/min - cufm - cfm or CFM - cfpm or CFPM Cubic feet per minute is used to measure the amount of air that is being delivered, and is a common metric used for carburetors,[3] pneumatic tools, and air-compressor systems.[4] ## Standard cubic foot Main article: [Standard cubic foot](/source/Standard_cubic_foot) See also: [Standard cubic foot per minute](/source/Standard_cubic_foot_per_minute) A standard cubic foot (abbreviated scf) is a measure of quantity of gas, sometimes[*[clarification needed](https://en.wikipedia.org/wiki/Wikipedia:Please_clarify)*] defined in terms of [standard temperature and pressure](/source/Standard_temperature_and_pressure) as a cubic foot of volume at 60 [°F](/source/Fahrenheit) (16 °C; 289 K) and 14.7 [pounds per square inch](/source/Pound_per_square_inch) (1.01 [bar](/source/Bar_(unit)); 101 [kPa](/source/Pascal_(unit))) of [pressure](/source/Pressure).[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*] ## See also - [Board foot](/source/Board_foot) - [Conversion of units](/source/Conversion_of_units) - [Cord (unit)](/source/Cord_(unit)) - [Cube (arithmetic)](/source/Cube_(arithmetic)), [cube root](/source/Cube_root) - [Cubic inch](/source/Cubic_inch) - [Cubic yard](/source/Cubic_yard) - [Orders of magnitude (volume)](/source/Orders_of_magnitude_(volume)) for a comparison with other volumes - [Orders of magnitude (one cubic millimetre to one cubic metre)](/source/Orders_of_magnitude_(one_cubic_millimetre_to_one_cubic_metre)) - [Square foot](/source/Square_foot) - [Therm](/source/Therm), a unit of natural gas approximately equal to 100 cubic feet - [Cubic metre per second](/source/Cubic_metre_per_second) ## References 1. ^ [***a***](#cite_ref-IEEE_1-0) [***b***](#cite_ref-IEEE_1-1) [***c***](#cite_ref-IEEE_1-2) [***d***](#cite_ref-IEEE_1-3) [*IEEE Standard Letter Symbols for Units of Measurement (SI Units, Customary Inch-Pound Units, and Certain Other Units)*](https://web.archive.org/web/20180612141002/http://standards.ieee.org/findstds/standard/260.1-2004.html) (Revision of IEEE Std 260.1-1993). IEEE Std 260.1-2004 (2004 ed.). Piscataway, N.J.: [IEEE](/source/IEEE). 2004-09-24. pp. 1–30. [doi](/source/Doi_(identifier)):[10.1109/IEEESTD.2004.94618](https://doi.org/10.1109%2FIEEESTD.2004.94618). [ISBN](/source/ISBN_(identifier)) [978-1-5044-0928-5](https://en.wikipedia.org/wiki/Special:BookSources/978-1-5044-0928-5). STD95220 STDPD95220 STDPL95220. Archived from [the original](https://standards.ieee.org/findstds/standard/260.1-2004.html) (PDF or hardcopy) on 2018-06-12. Retrieved 22 December 2019. [\[1\]](https://ieeexplore.ieee.org/document/1337729), [ISBN](/source/ISBN_(identifier)) [978-0-7381-3997-5](https://en.wikipedia.org/wiki/Special:BookSources/978-0-7381-3997-5), [ISBN](/source/ISBN_(identifier)) [978-0-7381-3998-2](https://en.wikipedia.org/wiki/Special:BookSources/978-0-7381-3998-2). 1. **[^](#cite_ref-Row_2-0)** Rowlett, Russ. ["Units: C"](https://web.archive.org/web/20180109055857/http://www.unc.edu/~rowlett/units/dictC.html). *How Many? A Dictionary of Units of Measurement*. [University of North Carolina at Chapel Hill](/source/University_of_North_Carolina_at_Chapel_Hill). Archived from [the original](http://www.unc.edu/~rowlett/units/dictC.html) on January 9, 2018. Retrieved August 2, 2020. 1. **[^](#cite_ref-3)** ["Carburetor CFM Racing"](https://web.archive.org/web/20210427053908/https://help.summitracing.com/app/answers/detail/a_id/4767/~/carburetor-cfm-rating). *Summit Racing*. Archived from [the original](https://help.summitracing.com/app/answers/detail/a_id/4767/~/carburetor-cfm-rating) on April 27, 2021. Retrieved February 7, 2019. 1. **[^](#cite_ref-4)** ["Easy Guide to Rotary Screw Air Compressors for Vehicles"](https://www.vmacair.com/blog/easy-guide-to-rotary-screw-air-compressors-for-trucks-vans/). *VMACAir.com*. October 16, 2018. Retrieved October 30, 2018. v t e Imperial units Comparison with US customary system Length Twip Thousandth of an inch Barleycorn Inch Hand Link Foot Yard Fathom Rod Chain Furlong Cable Mile Nautical mile League Area Square inch Square foot Square yard Perch Rood Acre Square mile Volume Derived Cubic inch Cubic foot Hoppus Cubic yard Cubic mile Tmcft Cooking Teaspoon Tablespoon Fluid ounce Cup Pint Quart Trade gallon Gallon Other Chaldron Minim Gill Fluid Scruple Fluid Drachm Peck Bushel Barrel Stuck Hogshead Speed Miles per hour Mass Grain Drachm Ounce Pound (mass) Stone Quarter Slug Long hundred Hundredweight Ship load Ton Pressure Ksi Pounds per square inch Other units and measures British thermal unit Degree Fahrenheit Rankine Foot-candle Foot-pound Foot-poundal Horsepower Horsepower-hour Kenning Pound (force) Pound-foot Poundal Span Related systems Avoirdupois system English units Winchester Exchequer English Engineering units Foot–pound–second system (FPS) Twenty-foot equivalent unit v t e United States customary units Comparison with imperial unit system Length Thousandth of an inch Inch Hand Link Foot Yard Rod Chain Furlong Mile Statute mile Area Square inch Square foot Square yard Acre Square mile Volume Derived Cubic inch Cubic foot Cubic yard Cubic mile Cooking Teaspoon Tablespoon Fluid ounce Cup Pint Quart Gallon Wood Board foot Cord Face cord Other Minim Gill Peck Bushel Barrel Acre-foot Speed Foot per second Miles per hour Mass Grain Dram Ounce Pound Hundredweight Ton Long Short Force Poundal Pound-force Kip Pressure Inch of mercury Pound per square inch Kilopound per square inch Other units and measures Bolt (cloth) British thermal unit Degree (angle) Fahrenheit Foot-candle Foot-lambert Foot-pound (energy) Horsepower Perm Pound-foot (torque) Ton of refrigeration Related systems American wire gauge Avoirdupois system Body jewelry sizes English Engineering Units Foot–pound–second system of units --- Adapted from the Wikipedia article [Cubic foot](https://en.wikipedia.org/wiki/Cubic_foot) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Cubic_foot?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.