Calculate gear ratios and understand transmission mechanics. Essential for performance tuning and drivetrain analysis.
Advertisement
Enter Your Measurements
Results
Gear Ratio
0.244
:1
Advertisement
Formula
Gear Ratio = Driven Shaft Teeth / Drive Shaft Teeth
How to Use This Calculator
How to Use
- 1
Count teeth on the drive shaft gear.
- 2
Count teeth on the driven shaft gear.
- 3
Calculate the gear ratio.
Frequently Asked Questions
Frequently Asked Questions
What does a gear ratio of 3.5:1 mean?
The drive shaft rotates 3.5 times for every 1 rotation of the driven shaft. Higher ratios = more torque, lower ratios = higher speed.
How does gear ratio affect performance?
Higher ratios accelerate faster but lower top speed. Lower ratios give higher top speed but slower acceleration. Used in different gears and differentials.
Advertisement
Related Calculators
Related Calculators
About This Calculator
This calculator uses the formula: Gear Ratio = Driven Shaft Teeth / Drive Shaft Teeth. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
▶Embed this calculator on your website
Copy and paste this code into your page:
<iframe src="https://calcsmart.io/embed/gear-ratio-calculator" width="100%" height="520" frameborder="0" style="border-radius:8px;border:1px solid #e5e7eb" title="Gear Ratio Calculator"></iframe>Free to embed. Attribution link included automatically.