Gear Ratio Calculator — Free Online Tool
Ratio, speed, torque across gear sets
Calculate gear ratios from teeth count. Simple or compound gear trains. Output speed and torque change.
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Gear ratio calculator
Calculate gear ratios, output speed, torque multiplication.
How to use this tool
- 1
Enter gear teeth
Driver (input) and driven (output) gear teeth.
- 2
Optional: input speed
RPM to calculate output speed.
- 3
See ratio + output
Ratio, RPM, torque multiplier.
Frequently Asked Questions
Gear ratio formula
Ratio = teeth_driven / teeth_driver. Ratio > 1 = reduction (slower, more torque). Ratio < 1 = overdrive (faster, less torque).
Compound gears
For 2-stage: Total ratio = Stage1 × Stage2. Multiply individual ratios together for final ratio.
Key Takeaways
- Gear Ratio Calculator is a free, browser-based calculator tool — ratio, speed, torque across gear sets.
- No signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Gear Ratio Calculator
- Open the tool: Launch Gear Ratio Calculator on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Gear Ratio Calculator — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- Processed in your browser. Tools that need an outside service say so on the page. Page views are counted (Google Analytics).
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Calculator Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | Gear Ratio Calculator |
| Category | Calculator |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Gear Ratio Calculator?
You should try Gear Ratio Calculator for a quick, private way to ratio, speed, torque across gear sets. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.