Gear Ratio Calculator

Posted by Dinesh on

The gear ratio is the ratio of the number of turns the output shaft makes when the input shaft turns once. In other words, the Gear ratio is the ratio between the number of teeth on two gears that are meshed together, or two sprockets connected with a common roller chain, or the circumferences of two pulleys connected with a drive belt.

Online engine transmission calculator calculates gear ratio using driven and drive values. The Gear Ratio is defined as the input speed relative to the output speed.

Gear Ratio Calculation

Formula:

R = Din : Dout

Din = Driven Gear,
Dout = Drive Gear,
R = gear ratio