Use our free Cycling Wattage Calculator to accurately estimate your bike power output (watts) based on rider weight, bike weight, speed, gradient, and aerodynamic factors. Perfect for cyclists aiming to optimize training and understand performance metrics. Calculate the power needed for your next ride!
Formula:
The Cycling Wattage (Power) is calculated using the following formula, considering rolling resistance, aerodynamic drag, and gravitational forces:
Power (Watts) = Prolling + Paero + Pgravity
Where:
- Prolling = Crr × Mtotal × g × V
- Paero = 0.5 × ρ × CdA × V3
- Pgravity = Mtotal × g × sin(arctan(Gradient/100)) × V
Variables Explained:
- Crr: Coefficient of Rolling Resistance (dimensionless)
- Mtotal: Total Mass (Rider Weight + Bike Weight) in kg
- g: Acceleration due to gravity (9.81 m/s2)
- V: Speed in m/s
- ρ: Air Density (kg/m3)
- CdA: Coefficient of Drag × Frontal Area (m2)
- Gradient: Road incline in percentage (%)