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Gear Calculator

Your transmission gear ratio

Use this calculator to determine the speed for the type of transmission you select, rear gears you have and your tire/wheel aspect ratio at a given RPM

Select Transmission:
Engine RPM Enter your normal highway cruising RPM.
Axle Ratio Enter your rear differential ratio (2.73, 3.27, 3.55 etc...)
Tire Height (in)* Enter your tire height ...which is from the Aspect Ratio calculation above.
  Ratio MPH  
1st Gear The estimated speed you you are at based on the information you provided as well as the trans you select
2st Gear
3st Gear
4st Gear
5st Gear
6st Gear
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