Wind Resistance Calculator — Headwind & Tailwind Effect
Calculate the effect of headwind and tailwind on power requirements.
How We Calculate This
Wind Effect on Power
The effective air speed changes with wind:
- Headwind: effective air speed = riding speed + wind speed
- Tailwind: effective air speed = riding speed - wind speed
- Crosswind: uses vector sum approximation
Drag power = 0.5 x air_density x CdA x effective_air_speed² x riding_speed
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify results and consult a professional bike fitter where appropriate.