Pound-foot (torque)

A pound-foot (lb·ft or lb_f·ft) is a unit of torque (a vector). One pound-foot is the torque created by one pound force acting at a perpendicular distance of one foot from a pivot point.

One pound-foot is exactly 1.3558179483314004 newton meters.^{[note 1]}

The name "pound-foot", intended to minimize confusion with the foot-pound as a unit of work, was apparently first proposed by British physicist Arthur Mason Worthington.^[1] However, foot-pound (ft·lb or ft·lb_f) is also sometimes used interchangeably with "pound-foot" to express torque.^[2]

See also

• Foot-pound (energy)
• Kilogram-force
• Spring scale

Note

References