Compare the performance potential of vehicles and organisms.
Mass & Power
Calculation Results
Enter power and weight
Overview
Power-to-weight ratio is the power produced by an engine divided by the total mass of the object. It is a key indicator of acceleration performance and climbing ability.
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Pro Tips
Common units include W/kg, hp/ton, and kW/kg.
Reducing mass has the same effect on PWR as increasing power.
In motorsports,PWR is often the most important metric for lap times.
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Fun Facts
"The Saturn V rocket had a power-to-weight ratio of about 15 W/kg at liftoff, increasing rapidly as fuel was consumed."
"Hummingbirds have extremely high power-to-weight ratios compared to other birds to take off and hover."
