⚙️ Gearing & Wheels Calculators

Gear ratio, gear inches, speed at cadence, chainring/cog combos, tire circumference, wheel comparison, and drivetrain efficiency calculators.

Calculate gear ratios for any chainring and cog combination. Compare ratios across your cassette to find optimal gearing for your terrain.

Calculate gear inches for comparing gearing across different wheel sizes. The universal metric for comparing bicycle gearing.

Calculate your ground speed for any gear and cadence combination. Find your ideal cadence for target speeds or see what gears you need.

Find the best chainring and cog combination for a target speed and cadence. Explore gearing options for your riding style and terrain.

Calculate actual tire circumference from rim size and tire width. Essential for accurate cycling computer calibration and gear calculations.

Compare two wheel and tire setups side by side. See the differences in circumference, rollover, and gearing between wheel sizes.

Estimate drivetrain power losses based on chain condition, lubrication, and cross-chaining. See how many watts you can save with a clean chain.