Unlock your vehicle's true potential with our Engine Horsepower Calculator using the ET Method. Quickly estimate your engine's horsepower output based on your quarter-mile elapsed time and vehicle weight. Perfect for drag racing enthusiasts, performance tuning, and understanding your car's power-to-weight ratio.
Formula:
The formula to estimate engine horsepower using the Elapsed Time (ET) method for a quarter-mile track is:
HP = W / ( (ET / C)3 )
- HP = Estimated Engine Horsepower
- W = Vehicle Weight (in pounds, lbs)
- ET = Elapsed Time (in seconds, s) for a quarter-mile (402.3 meters)
- C = A constant, approximately 5.825 for a quarter-mile drag race. This constant accounts for factors like aerodynamic drag and rolling resistance over the specified distance.