Horsepower calculator
Estimate theoretical engine output from a measured mass-air-flow value.
Airflow estimate
Horsepower from MAF
Estimate theoretical crank or wheel horsepower from the measured mass-air-flow value.
Estimated output
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Crank HP
Normalised airflow
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Applied factor
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Theoretical estimate
HP ≈ MAF × factor
This is a comparison aid, not a dynamometer result. Fuelling, drivetrain losses, sensor accuracy and engine condition affect actual output.
Workshop note
This is an approximate diagnostic comparison. It is not a substitute for a controlled dynamometer test or manufacturer performance data.