Gear Calculator

Explore how your chainrings, cassette, wheel size, and cadence work together to determine speed and gearing range. Compare multiple bike setups and find the gearing that matches your riding style.

Use a preset or enter a custom measured circumference.

rpm
%
rings

Smaller ring is easier, larger ring is harder.

cogs

Smaller cog is harder, larger cog is easier.

Saved setups
Load or compare different bikes. Select two setups to compare side-by-side.