Foot (unit)

A foot is a unit of length equal to 12 inches. The international foot is exactly 0.3048 meters.

Inch: A unit of length equal to one-twelfth of an international foot. Twelve inches define one international foot.
Ancient Greek units of measurement: Regional systems of weights and measures used in ancient Greek societies. Greek feet were among the early local standards that varied by place.
Aviation altitude: The vertical distance of an aircraft above a specified reference level. Aviation commonly reports altitude in feet, especially in the United States.
Centimeter: A metric unit of length equal to one-hundredth of a meter. Centimeters offer a smaller decimal-based alternative to inches and feet.
Yard: A unit of length equal to three international feet. The yard and foot share a fixed conversion used in customary measurement.
Roman units of measurement: The units of length, area, volume, and weight used in ancient Rome. The Roman foot helped shape later European customary length measures.
Construction measurement: The measurement and specification of dimensions in building projects. Plans and building materials often use feet and inches for dimensions.
Hand (unit): A unit of length equal to four inches, commonly used to measure horses. The hand is another body-derived unit, but it is one-third of a foot.
Meter: The SI base unit of length, defined by the speed of light in vacuum. The international foot is defined exactly as 0.3048 meters.
English units: Traditional units of measurement that developed in England and influenced later systems. The modern customary foot emerged through English measurement standards.

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