Wind Resistance Speed Reduction Calculator
Estimate the speed lost into a headwind for a vehicle or bike at constant power.
Compare Your Options And Get Clear Answers
Estimate the speed lost into a headwind for a vehicle or bike at constant power.
Wind Resistance Speed Reduction Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Wind Quick Guide
Typical values for reference.
| Speed km/h | Wind km/h | Drag % | New speed |
|---|---|---|---|
| 90 | 10 | 60 | 84.2 km/h |
| 90 | 20 | 60 | 78.7 km/h |
| 90 | 30 | 60 | 73.7 km/h |
| 90 | 50 | 60 | 65.0 km/h |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Wind Resistance Speed Calculator FAQ
Answers to common questions about this calculator.
Drag rises with the square of relative air speed.
No, it helps less than a headwind hurts.
Power ~ drag share x (relative speed / speed)^3; speed solved at constant power.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.