Gear Ratio Calculator

With Gear Ratio Calculator you can see the theoretical top speeds in all gears. You can change tire dimensions to calculate the effect on top speed and gearing. It will help you to find the best gear ratios for your racing car and to understand when it is the best time to change a gear.

Maximum Power RPM: Revolutions per minute when reaching
the top of the power curve.
Width Profile Wheel diameter
Tire Diameter [mm]:  OR 
Numbers of teeth Gear Ratio
Final Drive Ratio:

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1st Gear Ratio:  x   OR 
2nd Gear Ratio:  x   OR 
3rd Gear Ratio:  x   OR 
4th Gear Ratio:  x   OR 
5th Gear Ratio:  x   OR 
6th Gear Ratio:  x   OR 
Speed in:


This calculator is completely based on mathematical formulas to be useful to you. Try the Transmission Gear Ratio Calculator now.