Interactive Tool
Rotor Swept Area Calculator
Calculate the swept area of a wind turbine rotor from diameter or blade length.
The rotor swept area determines how much wind a turbine intercepts. A larger area captures more energy.
Swept area result
How to use this tool
- Enter your values in the fields provided.
- Read the instant results below the form.
- Copy, download, print, or share your result.
💡 Good to know
All calculations use standard, published formulas and simplified assumptions so beginners can build intuition. For real projects, always consult qualified engineers and site-specific data.
Frequently asked questions
Why does swept area matter?
Wind power is proportional to swept area: doubling the diameter quadruples the area and roughly quadruples available power.