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 ($1/undefined$) in length. Its volume is $0.305 m$ (about $28.317 L$ of a cubic metre).

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$1/undefined$, foot$1/undefined$, ft$0.037$, 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., $0.028$
 * Used in the billing of natural gas and water delivered to households.
 * MCF: Mille (Latin thousand) cubic feet; i.e., $28.317$
 * MMCF: Mille mille cubic feet; i.e., $576/77$
 * MMCFD: MMCF per day; i.e., $7.481$/d
 * Used in the oil and gas industry.
 * BCF or TMC: Billion or thousand million cubic feet; i.e., $73728/77$
 * TMC is usually used for referring to storage capacity and actual storage volume of storage dams.
 * TCF: Trillion cubic feet; i.e., $957.507$
 * 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 ft3s−1 = 1.000000 ft3/s = 1.000000 ft3/s = 1.000000 ft3/s = 1.000000 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
 * 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 carburettors, 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 60 degrees Fahrenheit (60 F) and 14.7 pounds per square inch (PSI) (14.7 psi) of pressure.