Modern Horsepower Calculator

Horsepower Calculator

Calculate horsepower based on quarter-mile stats or estimate performance based on your vehicle’s power

About Horsepower Calculation

Horsepower is a unit of measurement for power, commonly used to quantify the power output of engines and motors.

These calculations use established formulas to estimate horsepower based on quarter-mile performance metrics:

HP = (Weight / (ET / 5.825))³

HP = (Trap Speed / 234)³ × Weight

ET = 5.825 × (Weight / HP)^(1/3)

Note: Results are estimates. Actual performance may vary based on traction, weather conditions, and other factors.

1/4 Mile Calculator

Calculate horsepower based on quarter-mile elapsed time and vehicle weight

seconds
pounds
Estimated Horsepower
horsepower (hp)

Trap Speed Calculator

Calculate horsepower based on trap speed at the end of the quarter-mile

mph
pounds
Estimated Horsepower
horsepower (hp)

ET/MPH Calculator

Estimate quarter-mile performance based on horsepower and weight

hp
pounds
Estimated Quarter-Mile Performance
Elapsed Time
seconds
Trap Speed
mph

Weight/Horsepower Calculator

Estimate vehicle weight based on horsepower and quarter-mile time

hp
seconds
Estimated Vehicle Weight
pounds