Gear Ratio & RPM Calculator

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Gear ratio and RPM Calculator
Instructions:

Use this calculator to estimate various aspects of your performance. The defaults show suggested values. If you would like to find a value other than speed, fill in information for all the boxes and clear the valu in box you would like an answer for. For example if you want to calculate RPM at a known speed, clear the RPM box or set it to 0.

Description:	English Input:	Metric Input:
Tire Diameter:	Inches	MM
Wheel Rollout:	Inches	MM
Engine RPM:	RPM
Final Drive Ratio:
Gear Ratio:
Torque Converter Slip (%)	%
Speed:	MPH	KPH

Gear ratio and RPM Calculator