Cycling Power Calculator

Watts from speed and weight.

Input Parameters

Speed (km/h)

Weight (kg)

Grade (%)

Calculation Summary

Power (W)280

W/kg3.29

Speed (km/h)30

175 available

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About this calculator

Cycling watts from speed, weight and grade with aero and rolling terms.

Model?

Rolling + aero drag plus gravity on slopes.

Constants?

Crr 0.005, CdA 0.3, air 1.225 kg/m³.

W/kg?

Power over total weight — the climbing metric.