Quarter Mile ET Estimator

Estimate 1/4 mile elapsed time and trap speed from horsepower and weight, or work backwards to find the HP implied by your timeslip.

Flywheel Horsepower (HP)

Vehicle Weight (lbs, with driver)

Elapsed Time

12.34s

Trap Speed

119.3 mph

Musclecar / High Performance13.2 hp/100 lbs

Examples

ET Classification

< 9.00Pro / Fuel / Nitro

9.00 – 10.99Low 10s — Fast Street/Strip

11.00 – 11.99Hot Rod / Big Power Build

12.00 – 12.99Musclecar / High Performance

13.00 – 13.99Performance Street

14.00 – 14.99Stock Muscle Car

15.00+Stock / Mild Modify

Uses Hale's formula. Assumes ideal traction, no wheel spin, and a competent launch. Real-world results vary by track prep, tire selection, and driver skill. Weight should include driver (~180 lbs) and fuel.