Power Calculator
Enter work and time (or force and velocity) to compute power P = W/t = F·v.
Input Data
Results
At a glance:Power P is the rate at which work is done or energy is transferred: average P = W/t. For a force F moving an object at constant velocity v in its direction, P = F·v. The unit is the watt (W = J/s). Power combines force, distance and time and is central to engines, motors and energy efficiency. Instantaneous power is P = F·v = dW/dt. This tool accepts (W, t) or (F, v) and returns P.
Formula
P = W/t
P = F·v
$$P = \dfrac{W}{t}$$$$P = F v = \tau \omega$$How to Use
- Enter work W (J) and time t (s), or force F (N) and velocity v (m/s).
- The calculator returns power P.
Case Studies
Climbing stairs
W = 2000 J over t = 5 s.
P = 400 W.
A 400 W effort for 5 seconds.
FAQ
What is the difference between work and power?
Work is total energy transferred (J); power is how fast (J/s = W). Lifting the same load slowly or quickly takes the same work but different power.
Why P = F·v?
Work W = F·d, so P = W/t = F·(d/t) = F·v.
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References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.