In the imperial system of units and the United States customary system of units, a foot-pound, also written as ftlb or ftlbf, is a unit of energy. It is defined as the energy transmitted when a force of one pound-force is applied across a linear displacement of one foot. In other words, the energy is transferred when a foot is moved.

The newton meter (Nm), occasionally employed as a measure of work or energy, is equivalent to the joule, the standard international power unit in this context. https://mycalcu.com/ In the context of this application, it is defined as the amount of energy transmitted to an object when a force of one newton acts on that object in the direction of its motion across a distance of one meter.


1 ft lbf = 1.3558179483 Nm
1 Nm = 0.7375621493 ftlbf
convert 500 ft lbf to Nm:
500 ft lbf = 500 × 1.3558179483 Nm = 677.91 Nm