Quarter Mile Calculator
Free estimate elapsed time (et) and trap speed for drag racing based on horsepower and vehicle weight.
Input Parameters
HP
Engine output horsepower
Include vehicle, driver, and fuel weight
Results
Enter horsepower and weight to calculate
Quarter Mile Formulas
Elapsed Time (ET)
ET = 5.825 × (Weight/HP)^(1/3)
Where:
- • Weight in pounds
- • HP = horsepower
- • Result in seconds
Trap Speed
Trap Speed = 234 × (HP/Weight)^(1/3)
Where:
- • Weight in pounds
- • HP = horsepower
- • Result in mph
Note: These are estimates. Actual performance depends on traction, aerodynamics, drivetrain, and other factors.