Gear Ratio Planning Calculator
Use the Gear Ratio Planning Calculator. Enter Driven gear teeth and Drive gear teeth for a clear result, formula explanation, and practical planning checks.
Gear Ratio Planning measurements
Enter your values, then calculate.
Result
How to calculate gear ratio planning
This calculator finds gear ratio by dividing driven gear teeth by drive gear teeth.
How the calculation works
Gear ratio = Driven gear teeth ÷ Drive gear teeth.
Example
40 driven teeth, 10 drive teeth: 40÷10 = 4:1 ratio.
Frequently asked questions
How is Result calculated?
Result = [Driven gear teeth] ÷ [Drive gear teeth].
Is the Gear Ratio Planning Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Gear Ratio Planning Calculator
Gear ratio = Driven gear teeth ÷ Drive gear teeth.
Let's understand your gear ratio planning result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Gear Ratio Planning
- A ratio above 1 means the driven gear turns slower than the drive gear but with more torque; below 1 means faster with less torque.
- This is the fundamental relationship underlying transmission, differential, and general mechanical gearing calculations.
Common Gear Ratio Planning Mistakes to Avoid
- Mixing up which gear is 'driven' and which is 'drive', which would invert the resulting ratio.
When to Use This Calculator
This calculator finds gear ratio by dividing driven gear teeth by drive gear teeth.