Gear Ratio Calculator
A tool for calculating gear ratios.
Units
Units of measurement used in calculations
Engine RPM
Engine speed in revolutions per minute
Vehicle speed (mph)
The speed that the vehicle is traveling
Axle ratio
Final drive ratio (how many times the engine turns for one turn of the wheels)
Tire height (in)
Tire diameter
Gear ratio
Calculated gear ratio (engine RPM to wheel RPM)
