RPM Calculator
Calculate various gear ratios before you buy.

Engine RPM Calculator

RPM Calculator

Designation
Value
Required Data
Ring Gear and Pinion Ratio (3.08, 3.55, etc.)
Tire Height (24.5, 26, 27.5, etc.)
MPH
Calculated Results All Transmissions
Auto
AOD
Manual
5 Speed
*Final values are an estimated result.

For other Trans Gear Overdrive Ratios use 1:1 results and multiply by OD Ratio.