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Cycling Wattage Calculator
Estimate the power you need to ride at a given speed on a given gradient.
bolt Free Online Tool
⚡ Instant Results
📊 Clear Comparison
🔒 100% Free Tool
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Compare Your Options And Get Clear Answers
Estimate the power you need to ride at a given speed on a given gradient.
Cycling Wattage Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: P = aero + rolling + gravity.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Cycling Quick Guide
Typical values for reference.
| Speed km/h | Mass kg | Gradient % | Power |
|---|---|---|---|
| 30 | 80 | 0 | 140 W |
| 25 | 75 | 0 | 92 W |
| 40 | 75 | 0 | 268 W |
| 15 | 80 | 8 | 289 W |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Cycling Wattage Calculator FAQ
Answers to common questions about this calculator.
About 150 to 200 W on the flat.
Aerodynamic drag.
Gravity dominates.
No.