Cubic foot

# Cubic foot

Discussion

Encyclopedia
The cubic foot is an Imperial
Imperial unit
The system of imperial units or the imperial system is the system of units first defined in the British Weights and Measures Act of 1824, which was later refined and reduced. The system came into official use across the British Empire...

and US customary
United States customary units
United States customary units are a system of measurements commonly used in the United States. Many U.S. units are virtually identical to their imperial counterparts, but the U.S. customary system developed from English units used in the British Empire before the system of imperial units was...

(non-metric
Metric system
The metric system is an international decimalised system of measurement. France was first to adopt a metric system, in 1799, and a metric system is now the official system of measurement, used in almost every country in the world...

) unit of volume
Volume
Volume is the quantity of three-dimensional space enclosed by some closed boundary, for example, the space that a substance or shape occupies or contains....

, used in the United States and the United Kingdom. It is defined as the volume of a cube
Cube
In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube can also be called a regular hexahedron and is one of the five Platonic solids. It is a special kind of square prism, of rectangular parallelepiped and...

with sides of one foot (0.3048 m) in length
Length
In geometric measurements, length most commonly refers to the longest dimension of an object.In certain contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured. For example it is possible to cut a length of a wire which is shorter than wire...

.

## Conversions

 1 cubic foot = 1728 cubic inchCubic inchThe cubic inch is a unit of measurement for volume in the Imperial units and United States customary units systems. It is the volume of a cube with each of its 3 sides being one inch long....es = of a cubic yardCubic yardA cubic yard is an Imperial / U.S. customary unit of volume, used in the United States, Canada, and the UK. It is defined as the volume of a cube with sides of 1 yard in length.-Symbols:... ≈ 0.037037037037037 cu yd =0.028316846592 cubic metreCubic metreThe cubic metre is the SI derived unit of volume. It is the volume of a cube with edges one metre in length. An alternative name, which allowed a different usage with metric prefixes, was the stère...s |=28.316846592 litreLitrepic|200px|right|thumb|One litre is equivalent to this cubeEach side is 10 cm1 litre water = 1 kilogram water The litre is a metric system unit of volume equal to 1 cubic decimetre , to 1,000 cubic centimetres , and to 1/1,000 cubic metre...s = US fluid gallonGallonThe gallon is a measure of volume. Historically it has had many different definitions, but there are three definitions in current use: the imperial gallon which is used in the United Kingdom and semi-officially within Canada, the United States liquid gallon and the lesser used United States dry...s = US fl gal |≈ 7.48051948 US fl gal = US fluid ounceFluid ounceA fluid ounce is a unit of volume equal to about 28.4 mL in the imperial system or about 29.6 mL in the US system. The fluid ounce is distinct from the ounce, which measures mass...s |≈ 957.50649350 US fl oz ≈ 6.22883546 imperial gallons ≈ 996.61367 imperial fluid ounces ≈ 0.803563913 U.S. bushelBushelA bushel is an imperial and U.S. customary unit of dry volume, equivalent in each of these systems to 4 pecks or 8 gallons. It is used for volumes of dry commodities , most often in agriculture...s ≈ 0.1781076 oil barrelBarrel (unit)A barrel is one of several units of volume, with dry barrels, fluid barrels , oil barrel, etc...s

## Symbols

There is no universally agreed symbol but the following are used:
• cubic feet, cubic foot, cubic ft
• cu ft, cuft, cu.ft, cb ft, cbft, cb.ft, cbf, cu feet, cu foot
• ft³, feet³, foot³
• feet^3, foot^3, ft^3
• feet/-3, foot/-3, ft/-3 ft

• CCF for 100 cubic feet (C denotes centum, hundred. Used in the bill
Bill (payment)
A bill or invoice is a document requesting payment for an order previously supplied. Presentation of a bill is common practice on the part of credit card companies, utilities, and other service providers...

ing of natural gas and water delivered to households.)
• MCF for 1,000 cubic feet (M denotes mil, thousand)
• MMCF for 1000000 cubic feet (28,316.8 m³)
• MMCFD for millions of cubic feet per day.
• BCF for a billion cubic feet
• TCF for a trillion cubic feet.

## Cubic foot per second

There is no universally agreed symbol but the following are used:
• ft³/s
• cu ft/s
• cfs
• ft^3/sec
• ft³/sec
• cusec

## Cubic foot per minute

There is no universally agreed symbol but the following are used:
• ft³/min
• CFPM
• CFM

## Standard cubic foot

A standard cubic foot (abbreviated scf) is a measure of quantity of gas, sometimes but not always defined as a cubic foot of volume at 60 degrees Fahrenheit
Fahrenheit
Fahrenheit is the temperature scale proposed in 1724 by, and named after, the German physicist Daniel Gabriel Fahrenheit . Within this scale, the freezing of water into ice is defined at 32 degrees, while the boiling point of water is defined to be 212 degrees...

and 14.7 pounds per square inch (PSI) of pressure
Pressure
Pressure is the force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure is the pressure relative to the local atmospheric or ambient pressure.- Definition :...

. See standard temperature and pressure.

• 1 E-2 m³
1 E-2 m³
To help compare different orders of magnitudes this page lists volumes between 0.01 and 0.1 m3 . See also volumes or capacities of other orders of magnitude.*Volumes smaller than 10 litres* 0.01 m³ is equal to:** 1 E-2 m³** 10 litres...

for a comparison with other volumes
• Orders of magnitude (volume)
Orders of magnitude (volume)
The pages linked in the right-hand column contain lists of volumes that are of the same order of magnitude . Rows in the table represent increasing powers of a thousand. -Notes:...

• Conversion of units
Conversion of units
Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors.- Process :...

• Cube (arithmetic)
Cube (arithmetic)
In arithmetic and algebra, the cube of a number n is its third power — the result of the number multiplying by itself three times:...

, cube root
• Square foot
Square foot
The square foot is an imperial unit and U.S. customary unit of area, used mainly in the United States, Canada, United Kingdom, Hong Kong, Bangladesh, India, Pakistan and Afghanistan. It is defined as the area of a square with sides of 1 foot in length...

• Therm
Therm
The therm is a non-SI unit of heat energy equal to 100,000 British thermal units . It is approximately the energy equivalent of burning 100 cubic feet of natural gas....

, a unit of natural gas approximately equal to 100 cubic feet