Enter the vehicle speed in MPH.
Enter the differential gear ratio for front or rear.
Enter the selected transmission gear ratio.
Click on Calculate Potential Engine Speed.
The value will be returned in estimated potential engine speed in RPMs.
To do another, click the Clear Values button and then enter new values.
Please be advised: The accuracy of this calculator and
its applicability to your circumstances is not guaranteed. It's meant
to be used as an informational guide only. Always obtain professional
advice from qualified automotive professionals.