Bicycle Gear Inches Calculator. It can be used to compare different setups to find the optimal gearing for all kinds of bicycles. Gear inches is one of several relative measures of bicycle gearing giving an indication of the mechanical advantage of different gears.
What speed could you achieve within your cadence range and how many gear inches does the gear equate to. For each gear ratio. It can be used to compare different setups to find the optimal gearing for all kinds of bicycles.
The bicycle gear calculator displays graphically the gearing of derailleur gears and gear hubs.
As in a car low gearing is for going up hills and high gearing is for going fast. 80 is green 50ish 80 blue and below 50 red. Gear inches also show what gear ratio would be achieved with a drive wheel of the given diameter in inches as the gear inch value shows with the cranks directly attached using a penny. What power is required to pedal at different speeds in different gears with and without a headwind.