Aerodynamic Drag (CdA) Calculator
Estimate your CdA (drag area) from speed and power data. See how aerodynamic and rolling resistance forces split at different speeds.
Inputs
Results
CdA (Drag Area)
0.3886 m²
How to Use This Calculator
- Enter your Speed in kph or mph and Power Output in watts.
- Set Total Weight (rider plus bike in kg) and Air Density (use 1.225 kg/m³ at sea level).
- Adjust Rolling Resistance (Crr) and CdA (drag area) for your setup.
- Review Aerodynamic Drag Force, Rolling Resistance Force, and the wattage cost of each.
- Use Aero as % of Total Resistance to prioritize equipment upgrades.
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