Use this engineering calculation for a transparent preliminary estimate or independent arithmetic check when geometry, materials, loads, operating conditions, and units are defined consistently.

Air Density Kg Per M3 (kg/m³)

Required number input.

Swept Area Square Meters (m²)

Required number input.

Wind Meters Per Second (m/s)

Required number input.

Power Coefficient

Required number input.

Drivetrain Efficiency

Required number input.

Idealized electrical wind-turbine power ½ρAv³Cpη from air density, swept area, wind speed, power coefficient and drivetrain efficiency. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Electric Watts (W)

The resulting electric watts returned as a number.

• Fan, pump, turbine, and propeller performance varies with speed, flow, head, density, efficiency map, cavitation margin, installation, control, and off-design operation. Similarity or ideal-power equations do not replace manufacturer curves.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check assumptions against drawings, measurements, current material data, and the applicable design code. Apply required load combinations and safety factors, then obtain qualified review and testing for consequential designs.

• Aircraft Stall Speed

  Level-flight stall speed from aircraft weight, air density, wing area and maximum lift coefficient: Vs=√[2W/(ρSClmax)].

• Hydro Turbine Power

  Hydroelectric output power ρgQHη from fluid density, flow, net head and total turbine-generator efficiency.

• Wind Pressure

  Unfactored dynamic wind pressure q=½ρv² from supplied air density and wind speed; not a code design load.