Free Bike Gear Calculator & Cycling Tools

Calculate gear ratios, check compatibility, optimize bike fit, and more. Simple, accurate, and completely free.

No signup required • Works offline • Privacy-focused

Professional Cycling Tools

From gear calculations to bike fitting, our comprehensive suite of tools helps cyclists of all levels optimize their performance and comfort.

Calculate gear ratios, check compatibility, and optimize your drivetrain setup.

Get precise frame sizing recommendations using professional fitting methods.

Calculate optimal tire pressure based on your weight, tire size, and terrain.

Get personalized cycling advice from our AI assistant.

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No signup, no paywalls, no hidden fees

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Real-time calculations with precise results

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Your data stays on your device

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Desktop, mobile, tablet - fully responsive

Start with our gear calculator - it takes less than a minute.