Gear Ratio Calculator

Ring-and-pinion selection made easy!

Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Just type in your info (example: 5000 RPM), press calculate, and you’ll get the right ratio without the guesswork.

	Solve For
	Gear Ratio ^{(ex. 4.56)}
	RPM ^{(ex. 5000)}
	Tire Diameter (in.) ^{(ex. 28)}
	MPH ^{(ex. 45)}
		*** Calculated using a 1:1 final drive ratio (No Overdrive)