Cubic foot

The cubic foot (symbol ft3 or cu ft) , , . 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, or exactly (which differs by about 1% from of a cubic metre, making that a suitable approximation in many cases).

Conversions 1 cubic foot ≡ 1728 cubic inches≡ of a cubic yard≡ ≡ US gallons≡ US fluid ounces≈ ≈ ≡ US bushels≈ ≡ oil barrel

Symbols and abbreviations 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:

CCF or HCF: Centum (Latin hundred) cubic feet; i.e., Used in the billing of natural gas and water supply delivered to households. MCF: Mille (Latin thousand) cubic feet; i.e., MMCF: Mille mille (= million) cubic feet; i.e., MMCFD: MMCF per day; i.e., Used in the oil and gas industry. BCF or TMC: Billion or thousand million cubic feet; i.e., TMC is usually used for referring to storage capacity and actual storage volume of storage dams. TCF: Trillion cubic feet; i.e., Used in the oil and gas industry.

Cubic foot per second and related flow rates

The IEEE symbol for the cubic foot per second is ft3/s. The following other abbreviations are also sometimes used: ft3/sec cu ft/s cfs or CFS cusec second-feet

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, used mostly in the United States in the context of water flow, particularly of rivers and canals.

Conversions: 1 ft3/s = = = =

Cubic foot per minute The IEEE symbol for the cubic foot per minute is ft3/min. The following abbreviations are used: cu ft/min

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, pneumatic tools, and air-compressor systems.

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 and of pressure.

Cubic foot

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