Power-to-Weight Ratio Calculator
Power per tonne and kilograms per horsepower, including passengers and luggage.
Results
Power-to-weight ratio
100.00
cv/t
Power-to-weight ratio
73.55
kW/t
Mass
10.000
kg/cv
Power
110.32
kW
What this tool does
Power-to-weight predicts acceleration far better than power alone, which is why a light car with a modest engine often feels quicker than a heavy one with more power. Adding two passengers and their luggage typically costs several percent of the ratio.
Formula
ratio = power ÷ mass
Variables
| Symbol | Meaning | Unit |
|---|---|---|
p | Power | cv |
m | Mass | kg |
o | Mass | kg |
R | Power-to-weight ratio | cv/t |
K | Power-to-weight ratio | kW/t |
W | Mass | kg/cv |
P | Power | kW |
Worked example
- Power150 cv
- Mass1350 kg
- Mass150 kg
- Power-to-weight ratio100.00 cv/t
- Power-to-weight ratio73.55 kW/t
- Mass10.000 kg/cv
- Power110.32 kW
Limitations
- The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.
- The tool works with whatever currency you use for the inputs; it does not convert between currencies.