Gear Ratio Calculator

Calculate gear ratios, gear inches, and development for your bike setup. Understand your bike's gearing to choose the right gear combinations for different terrains and riding speeds.

Calculator

Front Chainring Teeth

Rear Cassette Cogs

Wheel Diameter

Tire Width (mm)

Desired Cadence (RPM, optional)

Disclaimer: This calculator provides estimates. Actual values may vary based on tire pressure, rider weight, and other factors.