Calculate mechanical power from work and time, or from force and velocity.
Power is the rate of doing work. The force-times-velocity form is more useful for machines, because it shows that a fixed power output trades force against speed — the basis of every gearbox. A motor rated in kilowatts can deliver high force at low speed or low force at high speed, but never both, which is why gearing exists.
Power
P = W ÷ t, and equivalently P = F v
P = W ÷ t, and equivalently P = F v Power is the rate of doing work. The force-times-velocity form is more useful for machines, because it shows that a fixed power output trades force against speed — the basis of every gearbox.
A motor rated in kilowatts can deliver high force at low speed or low force at high speed, but never both, which is why gearing exists.
This calculator takes 4 inputs: Work done, Time taken, Force, Velocity. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.