Definition: A cubic foot (symbol: ft3) is a unit of volume in the Imperial and United States customary systems. It is the volume of a cube with sides one foot (0.3048 meters) in length.

History/origin: The cubic foot is derived from the foot, a unit of length that has been used for centuries. Its origins can be traced back to ancient civilizations, with various cultures using different foot lengths. The standardization of the foot, and consequently the cubic foot, occurred over time as measurement systems evolved.

Current use: Cubic feet are commonly used in the United States and the United Kingdom for measuring volumes of various materials, particularly in construction, shipping, and heating/cooling calculations. It is often used for quantifying the volume of spaces, such as rooms or storage containers, and for measuring the amount of gas or liquid being transported.