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Mihsaba›Mechanical Power Calculator

Mechanical Power Calculator

Calculate mechanical power from work and time or from force, velocity and angle, with watts, kilowatts and mechanical horsepower.

These are ideal classical-physics models. Force directions, friction regime, elastic limits and time-varying forces can require a fuller model.

How to use

Mechanical power is the rate of doing work or transferring energy. This calculator supports work divided by time and force times velocity with an angle component.

  1. Choose W/t or Fv.
  2. Enter the relevant values.
  3. For Fv, enter the force/velocity angle.
  4. Review W, kW and mechanical hp.

How it is calculated

P=W/t or P=F·v·cosθ

Example

Example: doing 1000 J of work in 10 s gives an average mechanical power of 100 W.

Important notes

P=Fvcosθ is instantaneous/steady power when the values represent the same instant; changing motion may require time-dependent analysis.

Frequently asked questions

Work versus power?

Work is transferred energy; power is its rate.

Watts per mechanical horsepower?

About 745.7 W per mechanical hp.

Can power be negative?

Yes mathematically when force opposes velocity.