Power to Weight Ratio Calculator

Enter power and vehicle mass to calculate hp/lb, hp/ton, kW/ton, W/kg, and weight per horsepower.

Power

Power unit

Weight

Weight unit

—HP / US ton

—kW / metric ton

—Watts / kg

—lb / hp

—Simple power-to-weight math; it does not predict acceleration, traction, gearing, aerodynamics, or vehicle safety.

How to use this Power to Weight Ratio Calculator

Calculate horsepower-to-weight and kilowatt-to-weight ratios. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.