ENGINEERING CALCULATOR
Fan Air Power Calculator
Estimate theoretical fan air power and input power.
Formula
Air power (W) = airflow (m³/s) × pressure rise (Pa). Input power = air power ÷ efficiency.
How it works
Convert m³/h to m³/s by dividing by 3,600. Overall efficiency includes relevant fan and motor losses.
Limitations
A simplified estimate; actual motor sizing needs system curves, losses and operating conditions.