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

Conversions

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, feet3, foot3, ft3, feet/-3, foot/-3, ft/-3. Larger multiples are in common usage in commerce and industry in the United States:

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: 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: 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 60 F and 14.7 psi of pressure.