Cubic foot

A cubic foot is an Imperial / U.S. customary (non-metric) 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 foot (0.3048 m) in length.

Symbols

There is no universally agreed symbol but the following are used:

• cubic feet, cubic foot, cubic ft
• cu ft, cu feet, cu foot
• ft³, feet³, foot³
• feet^3, foot^3, ft^3
• feet/-3, foot/-3, ft/-3
• CCF for 100 cubic feet (C denotes centum, hundred)
• MCF for 1,000 cubic feet (M denotes mil, thousand)
• TCF for 1 trillion cubic feet. Used in the oil and gas industry. The term trillion in this case refers to 10¹², the short scale definition employed by most English speaking countries.

Conversions

1 cubic foot is equivalent to:

• 1728 cubic inches
• 28.316846592 litres or 0.028316846592 cubic metres
• ≈ 7.48051948 U.S. liquid gallons (exactly: 576/77 or 7480512/999999)
• ≈ 957.50649350 U.S. fluid ounces (exactly: 73728/77)
• ≈ 6.22883546 Imperial gallons or ≈ 996.61367 Imperial fluid ounces
• ≈ 0.037037 cubic yards (exactly: 1/27)
• ≈ 0.803563913 U.S. bushels
• ≈ 0.1781076 oil barrels

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