AutoCalculator.org
Bookmark and Share
Quater Mile Horsepower Calculator
1/4 Mile Horsepower Formula
To calculate the engine horsepower of a vehicle, enter the 1/4 mile trap speed in MPH and the Weight in lbs. Hit the Calculate HP button to obtain your estimated value.
Car Weight  (lbs)



1/4 mile speed (mph)      



 
 
Trap Speed - How Is This Used In The Estimated Horsepower Formula?
The Trap Speed method involves the measurement of the speed of a vehicle at the end of a fixed distance run (usually the distance is taken as 1/4 of a mile).

The total weight of the vehicle including the occupants and fuel loading over the Trap Speed run should be used when estimating the vehicle horsepower.
References:

Power to Weight Ratio calculator.

Engine Displacement Formula calculator.

Auto Math Handbook, J Lawlor, ISBN-13: 978-1557880208.