Simple calculator that takes a number of engine parameters and calculates a theoretical Mass Air Flow.

This calculator is intended for use by trained Automotive Technicians and is not recommended for untrained use.

The calculator assumes an average engine efficiency for both Petrol and Diesel Internal Combustion engines to calculate the result and does not take into account other variables that will affect readings (EGR, Throttle Flap etc)

This calculator can be used when monitoring vehicle live data using a diagnostic tool to estimate the approximate value that the Air Flow Meter should be reading.

This app should only be used for general assistance and should never be used as the primary method of diagnosis.