Cubic foot

The cubic foot 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 (0.3048 m) in length. To calculate cubic feet multiply length X width X height.

Contents 1 Conversions 2 Symbols 3 Cubic foot per second 4 Cubic foot per minute 5 Standard cubic foot 6 See also 7 Notes

Conversions

1 cubic foot	= 1728 cubic inches
	=1⁄27 of a cubic yard
		≈ 0.037037037037037 cu yd
	=0.028316846592 cubic metres
		=28.316846592 litres
	=576⁄77 US fluid gallons
		=1728⁄231 US fl gal
		≈ 7.48051948 US fl gal
	= 73728⁄77 US fluid ounces
		≈ 957.50649350 US fl oz
	≈ 6.22883546 imperial gallons
	≈ 996.61367 imperial fluid ounces
	≈ 0.803563913 U.S. bushels
	≈ 0.1781076 oil barrels

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 billing of natural gas and water delivered to households.)
• MCF for 1,000 cubic feet (M denotes mil, thousand)
• MMCF for 1,000,000 cubic feet (28,000 m³)
• MMCFD for millions of cubic feet per day.^[1]
• BCF for a billion cubic feet^[2]
• TCF for a trillion cubic feet.^[1][2]
• TMC for thousand million cubic feet (usually used for referring to storage capacity and actual storage volume of storage dams

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 and 14.7 pounds per square inch (PSI) of pressure. See standard temperature and pressure.

See also

• 1 E-2 m³ for a comparison with other volumes
• Orders of magnitude (volume)
• Conversion of units
• Cube (arithmetic), cube root
• Square foot
• Therm, a unit of natural gas approximately equal to 100 cubic feet

Notes

1. ^ ^{a b} Used in the oil and gas industry.
2. ^ ^{a b} The terms billion and trillion as used here refer to the short scale definitions, 10⁹ and 10¹² respectively.