Wind turbine output, capacity factor, and ROI calculators. Browse our free wind tools below — all calculators are instant, accurate, and require no sign-up.
Betz Limit Calculator — Calculate the maximum theoretical power a wind turbine can extract using the Betz Limit (59.3%). Compare theoretical maximum to actual turbine performance.
Small Wind ROI Calculator — Calculate the return on investment for a small wind turbine. Compare lifetime energy savings to installation cost and estimate payback period.
Wind Capacity Factor Calculator — Calculate the capacity factor of a wind turbine from actual vs rated output. Assess real-world performance and compare turbine sites effectively.
Wind Speed to Power Calculator — Convert wind speed into available wind power per square meter of swept area. Uses the kinetic energy equation to show power density at any wind speed.
Wind Turbine Output Calculator — Calculate the annual energy output of a wind turbine based on rotor diameter, wind speed, air density, and turbine efficiency using the power equation.