Wind-stream power in coherent SI units calculator

The wind-stream relation requires consistent density, velocity and area units; imperial inputs need the imperial coefficient.

P_{\text{wind}} = 0.5 \times \rho \times A \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}} = 0.5 \times 1.2 \times 35 \times {9}^{3} = 15{,}309

Symbol	Meaning	Unit
$P_{\text{wind}}$	wind-stream power before capture	W
$\rho$	air density	kg/m³
$A$	swept area	m²
$V$	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.