Ratio Calculator
Ratio Calculator: Print image
Ratio Calculator

If you have a pair of gears and would like to calculate the ratio, use the following form:

Drive Gear Tooth Count:

Driven Gear Tooth Count:

Gear Ratio:

Ratio Calculator


Metric Units. Imperial Units.

Max Engine Speed (RPM):

Tyre Diameter: (in mm)

Input gear Ratio:

First gear ratio:

Second gear ratio:

Third gear ratio:
 Fourth gear ratio:

Fifth gear ratio:

Sixth gear ratio:

Final drive ratio:
Current Gear
Top Speed (in KMH)
Speed Difference Between Gears (KMH)
Engine Speed Drop Between Gears (RPM)
1st    
  
2nd    
  
3rd    
  
4th    
  
5th    
  
6th  

Note: Calculated speed differences may not be exact due to rounding.
If you would like to print this, please fill in your ratio's and other information, then use your browser's "print" button, or click here.
If you would like to calculate your own ratios, or update what is on this sheet, feel free to visit www.albins.com.au - its free!