Horsepower Design Equations and Formulas Calculator
Automobile - Car - Truck

Solving for vehicle power to weight ratio.

This method uses power in horsepower and weight in pounds to determine the power to weight ratio. A car with a high power to weight ratio will accelerate faster than a automobile with a lower value.

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related

Engine horsepower estimate using quarter mile elapsed time Includes plot and graph

rotating horsepower

	Rotating horsepower
	Torque
	Speed - revolutions per minute (rpm)

estimate engine or motor horse power for cars, trucks and motorcycles

	Estimate of engine horsepower after a quarter mile run using the trap speed method.
	Determine the increase in engine horsepower when an after market modification, race or performance part has been installed with trap speed.
	Calculate engine horsepower after a quarter mile run using the ET method.
	Compute estimated increase in engine horsepower when an after market, racing upgrade or performance part has been installed with ET.
	Dyno correction factor. Factor corrects horsepower for normally aspirated internal combustion engine to a standard humidity, pressure and temperature after dynamometer measurement.
	Calculate a vehicles power to weight ratio. Acceleration is related to the ratio.