Horsepower Calculator (Quarter-Mile Method)
Physics & EngineeringEstimates engine horsepower from vehicle weight and quarter-mile drag strip elapsed time, using the classic Huntington formula.
Estimated Horsepower
The estimated engine horsepower, based on the classic Huntington elapsed-time formula.
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Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Physics & Engineering calculators
Frequently Asked Questions
How is horsepower estimated from a quarter-mile time?
Horsepower = Weight / (Elapsed Time / 5.825)^3, a well-known drag-racing estimation method (the Roger Huntington formula). It is an approximation based on typical power-to-weight relationships for a good launch, not an exact dyno measurement.
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