Gear Ratio Calculator

Driven and Driver Gear Ratio

This calculator finds gear ratio and output speed from driver and driven gear tooth counts.

Method: Gear ratio is driven teeth divided by driver teeth. Output speed is input speed divided by that ratio.

Understanding Gear Ratio

1. What This Calculator Measures

Gear ratio compares driven gear teeth with driver gear teeth and predicts speed change.

2. How the Calculation Works

The calculator divides driven teeth by driver teeth and can estimate output rpm.

3. Formula or Rule Used

ratio = driven teeth / driver teeth.

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