Imperial wind-power coefficient calculator

The imperial coefficient converts mph cubed into wind-stream power per square foot at the stated density.

Units

P_{\text{wind}} / A = K \times V^{3}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

P_{\text{wind}} / A = 0.00508 \times {24}^{3} \approx 70.226

Symbol	Meaning	Unit
$P_{\text{wind}} / A$	wind-stream power density	W/ft²
$K$	coefficient for the stated air-density assumption	W/(ft²·mph³)
$V$	wind speed	mph

Symbol	Meaning	Unit
$P_{\text{wind}} / A$	wind-stream power density	W/m²
$\rho$	air density for the specified wind condition	kg/m³
$V$	wind speed	m/s

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.