Rolling Resistance Calculator

Your details

Total mass of the vehicle including passengers and cargo. Metric: kilograms. Imperial: pounds (converted internally to kg).
kg
Select a common tire-surface combination to auto-fill the rolling resistance coefficient, or choose "Custom" to enter your own.
Vehicle speed, used to compute rolling-resistance power loss. Set to 0 to skip power calculations.
km/h
Road gradient as a percentage (rise over run x 100). Positive = uphill, negative = downhill. A 5% grade means 5 m of rise per 100 m of horizontal distance.
%
Standard Earth gravity is 9.81 m/s². Adjust only if you need a non-standard value (e.g., a different planet or precise local correction).
m/s²
Rolling resistance forceNormal road resistance
191.3

Horizontal force opposing motion due to tire/surface deformation

Normal force14,715
Grade resistance force0
Total tractive force191.3
Power loss4,251
Power loss4.251
Crr used0.013
Force unitN
Power unitW
Rolling resistance191.3
Grade resistance0
Total tractive force191.3

Rolling resistance force: 191.29 N

  • Rolling resistance force is 191.29 N. This is the continuous drag the tires or wheels must overcome just to keep rolling.
  • At 80 km/h, rolling resistance dissipates 4.25 kW of power continuously.
  • Your rolling resistance coefficient (Crr = 0.013) determines how energy-efficient the wheel-surface pairing is. Reducing Crr by half (e.g., properly inflating tires or switching to low-rolling-resistance tires) would halve the rolling resistance force.

Next stepTo minimize rolling resistance, maintain correct tire inflation pressure, choose low-rolling-resistance tires, and prefer smooth, hard surfaces where possible.

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