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Calculate MSA ET From Your ET
For a great software program try Larry Meaux's Pipe Max.
His program is excellent and will provide a lot of info.
Back to Calculators
These equations are for recreation only.
This calculator uses the Motorsports Standard Atmosphere (MSA) at sea level. (Not ISA - International Standard Atmosphere)
Use one of my other calculators to find your HP Correction factor, like this one:
Calculate HP with Correction
ET Conversion Calculator