Learn about the metric based gearing system used by the UCI

Learn about the gearing system proposed by Sheldon Brown

Learn how to use the original and most popular bicycle gear calculator for cyclists on the internet since 2009

Learn about the customary gearing system still in use today

Learn about the fundamental gearing system on a bicycle

Learn about skid patches on brakeless fixed gear bicycles

Learn about the trivial inaccuracies of bicycle tire circumferences

Learn about the international standard for labelling the size of tires

Learn how to use the new bicycle tire size converter

Generate a table of similar cadences from a range of gear sizes.

Calculate cycling cadences at a specified speed given chainring, sprocket, tire and wheel size.

Generate a table of similar chain links from a range of gear sizes.

Generate a table of similar development meters from a range of gear and wheel sizes.

Calculate development meters given chainring, sprocket, tire and wheel sizes.

Generate a table of similar gain ratios from a range of gear and crank sizes.

Generate a table of similar gear inches from a range of gear and wheel sizes.

Calculate gear inches given chainring, sprocket, tire and wheel sizes.

Generate a table of similar gear ratios from a range of chainrings and sprockets.

Calculate gear ratios given chainring and sprocket sizes.

Generate a table of similar skid patches for single-legged or ambidextrous skidders.

Calculate fixed gear skid patches for single-legged or ambidextrous skidders.

Generate a table of similar speeds from a range of gear sizes.

Calculate cycling speeds in kilometers or miles per hour given cadence, chainring, sprocket, tire and wheel sizes.

Calculate cycling speeds at a specified cadence given chainring, sprocket, tire and wheel sizes.