Enter your engine displacement, air flow, and engine RPM into the calculator to determine the volumetric efficiency.

Volumetric Efficiency Calculation Formula

The following formula is used to calculate the volumetric efficiency of an engine:

Volumetric Efficiency (%) = (Air Flow * 3456) / (Engine Displacement * RPM) * 100

Variables:

  • Volumetric Efficiency is the efficiency of the engine in using the air-fuel mixture (%)
  • Air Flow is the amount of air entering the engine (cfm)