Air Flow Rate (CFM) Calculation

The calculator will calculate the air flow rate based on given values



The air flow rate based on selected values of cubic inch displacement, engine speed and volumetric efficiency.

CFM is a measure of air flow into and out of an engine.


CFM= (CID * RPM * VE) / 3456


CFM (Cubic Feet per Minute) = Air Flow Rate,

CID = Cubic Inch Displacement,

RPM = Engine Speed,

VE = Volumetric Efficiency