How to use the mechanical power calculator
Find power from work and time, in watts and horsepower. Enter work or energy, time in the fields above; the power, power, power are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- W — Work or energy (J)
- t — Time (s)
Worked example
With work or energy = 5000 J, time = 10 s, the calculator gives power ≈ 500 W; power ≈ 0.6705109 hp; power ≈ 0.5 kW.
Frequently asked questions
What is the formula for the mechanical power calculation?
Power (W) = W / t. Power (hp) = [Power] / 745.7. Power (kW) = [Power] / 1000. Here W is work or energy (J), t is time (s).
What inputs do I need for the mechanical power calculator?
You need work or energy in J, time in s. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.