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Quarter Mile Calculator - 1/4 Mile Time

Free quarter mile calculator. Estimate 1/4 mile time and trap speed from horsepower and weight. Perfect for drag racing enthusiasts.

Quarter Mile Calculator

Estimate your 1/4 mile time

Engine horsepower at the wheels

Vehicle weight including driver

Quarter Mile

Enter your values to see results

and click the "Calculate" button

Quarter Mile Calculator

Estimate your quarter mile time from horsepower and weight. The quarter mile (1320 feet) is the standard drag racing distance.

Quarter Mile Formulas

ET = 5.825 × (Weight/HP)^0.333 | MPH = 234 × (HP/Weight)^0.333

Based on theoretical physics and empirical data. Actual times depend on traction, launch, gearing, and driver skill.

Frequently Asked Questions

Why doesn't my actual time match?
This is theoretical. Real times depend on traction, launch technique, transmission losses, altitude, and temperature.
What's a good quarter mile time?
Average car: 15-17s. Sports car: 12-14s. Muscle car: 11-13s. Supercar: 10-11s. Top Fuel dragster: <4s.

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