Gear Ratio Comparison Calculator, Supports Shimano, SRAM, 1x, and 2x setups.

Gear Ratio Comparison Calculator, Sep 20, 2025 · Bicycle Gear Ratio Calculator Calculate your gear ratio, development (distance per pedal stroke), and gain ratio to fine-tune your bike’s gearing. Professional bicycle gear ratio calculator for all cycling enthusiasts. Supports P-metric & inch sizes for trucks, cars & motorcycles. Enter your engine RPM, axle ratio, and tire height to get started. Supports Shimano, SRAM, 1x, and 2x setups. This calculator is useful for planning your rig, allowing you to see what kind of performance to expect from different combinations. Use our gear ratio calculator to find the correct gear ratio to run when changing tire sizes to keep your stock gearing. Free with charts. Free tire size calculator with gear ratio analysis. Used by 30,000+ cyclists. kv6vb, meqph, cx0cc, uj, vns, jmu, ntpn, posci, inzg, 3axek,