STL to 3MF File Converter: Free & Online
Prepare and convert mesh files from STL to 3MF format for precise 3D printing.
- 5.0
Trusted by 10,000+ engineers
No Limits
Automatic Mesh Repair
SSL & Auto-Delete
Video coming soon
Watch our quick tutorial or read:
Which STL to 3MF Converter Is Best for You?
Compare STL to 3MF converters and find the best fit for your workflow.
| Speed |
Ultra-fast Local processing
|
Fast
|
Slow
|
|---|---|---|---|
| File Size Limits |
Unlimited
|
Unlimited
|
File size limit (50 MB)
|
| File Number Limits |
Unlimited
|
Unlimited
|
Usually single file only
|
| Folder Support |
Full folder import
|
Full folder import
|
Not supported
|
| Assembly Conversion |
Partial or full assembly
|
Partial or full assembly
|
Not supported
|
| Mesh Validation |
Integrated
|
Integrated
|
Not supported
|
| Auto Mesh Repair |
Advanced
|
Advanced
|
Not supported
|
| Mesh Repair Options |
Advanced
|
Advanced
|
Not supported
|
| Accuracy Control |
Full
|
Full
|
Not supported
|
| 3D Viewer |
Advanced
|
Advanced
|
Basic or no preview
|
| 3D Editor |
Advanced
|
Advanced
|
Not supported
|
| Security & Privacy |
100% Local
|
SSL + Auto-delete
|
Files often stored on servers
|
| Cross-Platform |
Windows, macOS, Linux
|
All devices
|
Web only, limited mobile UX
|
| Suitable for |
Professionals and engineers
|
Quick online conversions
|
Not recommended
|
Ready to Convert Your STL Files?
Join thousands of engineers who trust MeshInspector for their 3D file conversion needs. Start converting today with no limits and professional results.
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User Testimonials
- 5.0
out of 5.0
based on 4 reviews
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- By Mesh Inspector Team
- 2025-12-11
- 2025-12-12
