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Bike Cadence and Speed Calculator
Speed from cadence and gearing across a range of cogs.
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Speed
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Speed from cadence and gearing across a range of cogs.
Bike Cadence and Speed Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: Speed = (chainring / cog) x wheel circumference x cadence.
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
Bike Quick Guide
Typical values for reference.
| Cadence | Chainring | Cog | Speed km/h |
|---|---|---|---|
| 70 | 34 | 28 | 10.7 km/h |
| 80 | 50 | 21 | 24.0 km/h |
| 90 | 50 | 16 | 35.4 km/h |
| 100 | 53 | 11 | 60.7 km/h |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Bike Cadence and Calculator FAQ
Answers to common questions about this calculator.
About 14 km/h in a 34×28 gear and 51 km/h in a 50×11.
About 2100 mm for 700x25c.
Speed = (chainring / cog) x wheel circumference x cadence.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.