Bolt Torque Calculator — Free Online Tool
Torque spec for any bolt grade + size
Calculate bolt torque spec by grade, diameter, lubrication. Grade 5/8/SAE, metric 8.8/10.9/12.9.
📚 Learn more
Bolt torque calculator
Find torque spec for any bolt size, grade, lubrication.
How to use this tool
- 1
Pick bolt size + grade
Diameter + strength class determine proof load.
- 2
Pick lubrication
Dry, lubricated, or anti-seize (friction factor).
- 3
See torque spec
Recommended torque in ft·lb and N·m.
Frequently Asked Questions
Torque formula
Grade meanings
Key Takeaways
- Bolt Torque Calculator is a free, browser-based calculator tool — torque spec for any bolt grade + size.
- 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 Bolt Torque Calculator
- Open the tool: Launch Bolt Torque 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.
Bolt Torque 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 | Bolt Torque Calculator |
| Category | Calculator |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Bolt Torque Calculator?
You should try Bolt Torque Calculator for a quick, private way to torque spec for any bolt grade + size. 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.