foot/square second [ft/s^2] Unit Converter

Definition of foot/square second [ft/s^2] unit

The foot per square second (ft/s²) is a unit of acceleration in the foot–pound–second system. It describes a change in velocity of one foot per second occurring every second, and equals approximately 0.3048 meters per square second in SI units.

History of foot/square second [ft/s^2] unit

The unit emerged from traditional English and American measurement practices, where the foot and second were familiar standards for length and time. It became established in engineering, mechanics, and physics during the development of British gravitational and foot–pound–second systems. Unlike the foot per second squared, the unit is not tied to a named constant; it simply combines customary distance and time units. Modern definitions use the internationally standardized foot, exactly 0.3048 meter, ensuring that one foot per square second equals 0.3048 meters per square second.

Applications of foot/square second [ft/s^2] unit

Today, ft/s² appears mainly in technical fields that retain U.S. customary units, including automotive engineering, aerospace documentation, machinery specifications, and educational materials. It can describe vehicle acceleration, elevator motion, or gravitational effects in older references. For example, an acceleration of 10 ft/s² indicates velocity increasing by 10 feet per second each second, approximately 3.048 m/s².

Complete list of foot/square second [ft/s^2] unit conversion