Bike Gear Ratio Calculator
Computes gear ratio, gear inches, meters of development and speed at your cadence for any chainring and cog combination, plus a full cassette sweep so you can compare gearing across a whole drivetrain.
Read the full guide to this tool
Results
Notes
- Gear inches = ratio × wheel diameter; it survives from penny-farthing days as the standard comparison number.
- Development (meters per pedal revolution) is the same idea in metric.
- Educational estimate for sport and training purposes, not professional coaching or medical advice.
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