Quarter Mile Calculator
Estimate ET, trap speed, and 0–60 from horsepower and weight.
Quarter mile ET
13.21
seconds at 103.2 mph trap
Power-to-weight
11.67
lb / hp
0–60 mph
3.5s
Garcia ET
13.10s
Uses Roger Hale's formulas (ET = 5.825·∛(W/HP), trap = 234/∛(W/HP)). Real-world traction, gearing, transmission losses, and driver skill all affect actual times. Stick cars usually trap 5 to 10 percent better than predicted because the model overestimates rolling losses.
About
Enter horsepower and weight (with driver). Uses Roger Hale's empirical formulas to estimate quarter-mile ET, trap speed, and 0–60. Real times depend on traction, gearing, and driver.
How to use
- Enter wheel HP or crank HP.
- Enter total weight with driver.
- Read estimated ET and 0-60.
FAQ
WHP or crank HP?+
Wheel HP is more accurate for ET predictions because it accounts for drivetrain loss. Crank numbers tend to overpredict ET by 10 to 15 percent.