Gear Ratio Calculator | RANDYS Worldwide

Gear Ratio

Try our simple and easy to use Gear Ratio Calculator to quickly find the correct gear ratio for your differential. Simply enter the number of teeth on your ring gear and pinion gear and click the "Solve" button.

Ring Gear

Pinion Gear

Gear Ratio

RANDYS Worldwide makes no guarantee to the accuracy of calculations. Please email CustomerService@randysworldwide.com with any calculation errors.

Tire Height

Cubic Inches Liters

Transmission Ratio RPM

Engine Displacement

Gear Ratio

Rod Ratio

Horsepower

RPM

The ratio of a ring and pinion gear set is simply the number of ring gear teeth divided by the number of pinion gear teeth. To use the calculator, count the teeth on each gear and enter them in the appropriate box. Press the Solve button and the ratio appears below. The results can be used in our Transmission Ratio RPM Calculator and RPM Calculator. This also helps confirm the ratio if you lose the box or can’t read the stamping on the gears.

Gear Ratio Calculator | RANDYS Worldwide

Gear Ratio

Randy's Sales Team

1-866-631-0196