bikecalcs.uk
Drag Calculator — Aerodynamic Drag Force
Calculate aerodynamic drag force at different speeds.
How We Calculate This
Aerodynamic Drag Formulas
- Drag Force (N) = 0.5 x air_density x CdA x v²
- Drag Power (W) = 0.5 x air_density x CdA x v³
Where v is speed in m/s, air_density in kg/m³ and CdA in m².
Frequently Asked Questions
Related Calculators
Watts Per Kilo Calculator
Calculate your power-to-weight ratio in watts per kilogram.
Power to Speed Calculator
Estimate cycling speed from power output accounting for all resistances.
Climbing Power Calculator
Calculate the power needed to climb at a given speed and gradient.
CdA Calculator
Estimate your drag coefficient area from field test data.
Wind Resistance Calculator
Calculate the effect of headwind and tailwind on power requirements.
Was this calculator helpful?
Last updated: February 2026
All calculations are estimates. Always verify results and consult a professional bike fitter where appropriate.