Cycling Power Calculator
Calculate cycling power output based on speed, weight, grade, and conditions. Estimate watts and power-to-weight ratio.
Inputs
kg
km/h
%
km/h
Results
Total Power
174.48 W
Watts per kg
2.18 W/kg
Rolling Resistance32.7 W
Air Resistance141.78 W
Climbing Power0 W
Total Power
174.48 W
Watts per kg
2.18 W/kg
How to Use This Calculator
- Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
- Total Weight (Rider + Bike) — Combined weight of cyclist and bicycle default: 80 kg.
- Speed — Cycling speed default: 30 km/h.
- Grade — Road gradient percentage (positive = uphill) default: 0 %.
- Wind Speed — Wind speed (optional) default: 0 km/h.
- Once all inputs are set, review your results in the Results panel. Here's what each output means:
- Total Power — shown as a numeric value. This is the primary result of this calculator.
- Watts per kg — shown as a numeric value. This is the primary result of this calculator.
- Rolling Resistance — shown as a numeric value.
- Air Resistance — shown as a numeric value.
- Climbing Power — shown as a numeric value.
- Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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Formula
Power = Rolling Resistance + Air Resistance + Climbing PowerRelated Calculators
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