Performance
Power-to-Weight Calculator
Compare performance potential by relating engine horsepower to vehicle weight.
Reviewed September 8, 2026
Enter your numbers
Calculate your estimate
Your estimate
Power to weight222.2 hp/US ton
Horsepower per 1,000 lb111.1 hp
Weight per horsepower9 lb/hp
Metric equivalent182.7 kW/metric ton
Estimate only — actual figures may vary.
Quick answer
Compare performance potential by weight
This calculator relates horsepower to vehicle weight so you can compare cars using hp per US ton and pounds per horsepower.
The method
US power-to-weight figures
Horsepower is divided by vehicle weight in US tons, and weight is also shown in pounds per horsepower.
Use a consistent curb or test weight.
Crank and wheel horsepower are not directly comparable.
Traction and gearing also affect acceleration.
Power to weight questions
Should I use curb weight or loaded weight?
Use the same weight definition for every vehicle you compare. Loaded or test weight is often more realistic than brochure weight.
Does power-to-weight predict acceleration exactly?
No. Traction, gearing, torque curve, aerodynamics and drivetrain losses also affect acceleration.