How this calculator works
Average power is energy transferred per unit time. The force method assumes a constant force parallel to the displacement. For angled forces or a change in kinetic energy, use the work calculator. These results describe mechanical energy transfer before any efficiency correction.
Formula
P = W/t; W = Pt = Fd for an aligned constant force.
Worked example
Transferring 1000 J over 10 s requires an average 100 W. A 100 N aligned force moving 10 m also transfers 1000 J.
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Frequently asked questions
Does average power show a peak load?
No. Instantaneous power can exceed or fall below the average.
Can I use electricity bills in kWh?
Yes. kWh measures energy and converts to joules, while kW measures power.
Where does efficiency enter?
These equations give transferred work. Divide useful power by efficiency to estimate a larger input power.