Bike Gear Ratio Calculator
Calculate the gear ratio, gear inches, and speed for a given chainring and sprocket combination. Useful for cyclists to optimize cadence and performance.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
Previous Results
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Frequently Asked Questions
Gear ratio is the number of teeth on the chainring divided by the number of teeth on the rear sprocket. It determines how many times the rear wheel turns for each pedal revolution.
Gear inches is a measure of how far the bike travels per pedal revolution, calculated as gear ratio multiplied by wheel diameter in inches.
Speed (mph) = gear inches × π × cadence (RPM) × 60 minutes per hour / 63360 inches per mile.