How to use the wind turbine power calculator
Estimate power from a wind turbine. Enter rotor diameter, wind speed, power coefficient in the fields above; the available wind power, turbine output are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- D — Rotor diameter (m)
- v — Wind speed (m/s)
- cp — Power coefficient
Worked example
With rotor diameter = 80 m, wind speed = 10 m/s, power coefficient = 0.4, the calculator gives available wind power ≈ 3,078.761 kW; turbine output ≈ 1,231.504 kW.
Frequently asked questions
What is the formula for the wind turbine power calculation?
Available wind power (kW) = 0.5 × 1.225 × π × (D / 2)^2 × v^3 / 1000. Turbine output (kW) = [Available wind power] × cp. Here D is rotor diameter (m), v is wind speed (m/s), cp is power coefficient.
What inputs do I need for the wind turbine power calculator?
You need rotor diameter in m, wind speed in m/s, power coefficient. 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.