Gear Inches Calculator — Compare Gears Across Wheel Sizes
Convert gear ratios to gear inches for cross-bike comparison.
How We Calculate This
Gear Inches Formula
Gear Inches = (Chainring / Sprocket) x Wheel Diameter (inches)
Wheel diameter in inches is derived from wheel circumference: Diameter = Circumference / pi / 25.4
Frequently Asked Questions
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Last updated: 2025-02-20
All calculations are estimates. Always verify results and consult a professional bike fitter where appropriate.