Welcome to 3MF to STL, a free online tool for converting 3MF files to STL format. By accessing or using our service, you agree to be bound by these Terms of Service. If you do not agree with any of these terms, please do not use our service.
3MF to STL provides a client-side file conversion tool that:
- Converts 3MF (3D Manufacturing Format) files to STL (Stereolithography) format
- Performs all processing locally in your web browser
- Offers 3D preview, scaling, positioning, and export options
- Requires no user registration or file uploads to servers
You may use 3MF to STL for:
- Personal and commercial 3D printing projects
- Converting your own 3MF files to STL format
- Preview and verification of 3D models before printing
- Educational and learning purposes
You may NOT use 3MF to STL to:
- Convert files you do not own or have permission to convert
- Violate intellectual property rights or copyright laws
- Distribute malware or malicious files
- Attempt to reverse engineer, hack, or compromise our service
- Use automated tools to scrape or overload our servers
3MF to STL is provided "AS IS" and "AS AVAILABLE" without warranties of any kind, either express or implied, including but not limited to:
- Accuracy of file conversions
- Compatibility with all 3D printers or slicing software
- Uninterrupted or error-free service
- Preservation of all 3MF file properties (colors, materials, textures are not preserved in STL format)
While we strive for accurate conversions, we do not guarantee that:
- Converted STL files will be identical to the original 3MF geometry
- All mesh properties will be preserved
- The output will be suitable for your specific use case
To the maximum extent permitted by law, 3MF to STL and its operators shall NOT be liable for any:
- Direct, indirect, incidental, or consequential damages
- Lost data, profits, or business opportunities
- Damage to your device or 3D printer
- Failed prints resulting from converted files
- Any other damages arising from use of our service
YOU are solely responsible for:
- Verifying the accuracy of converted files
- Testing files before commercial use or production
- Ensuring compatibility with your 3D printer/slicer
- Backing up important files before conversion
- You retain all rights to your original 3MF files
- You grant us NO rights to your files (as they never reach our servers)
- You are responsible for ensuring you have rights to convert files you upload
- The 3MF to STL website, design, and code are protected by copyright
- Our service name and branding are our intellectual property
- You may not copy, modify, or redistribute our service code without permission
- All file processing happens in your browser
- No files are uploaded to our servers
- No personal data is collected without consent
- See our Privacy Policy for complete details
We use third-party analytics services (Google Analytics, Microsoft Clarity, Plausible) to improve our service. These services may collect anonymous usage data according to their own terms and privacy policies.
We reserve the right to:
- Modify, suspend, or discontinue the service at any time
- Change features, limits, or functionality without notice
- Update these Terms of Service as needed
We will make reasonable efforts to notify users of significant changes by updating the "created_at" date on this page. Continued use of the service after changes constitutes acceptance of the updated terms.
We reserve the right to terminate or restrict access to our service for any user who violates these terms, engages in abusive behavior, or attempts to harm our service or other users.
These Terms of Service shall be governed by and construed in accordance with applicable laws. Any disputes arising from these terms or use of our service shall be resolved through appropriate legal channels.
For questions about these Terms of Service:
Note: This is a free service provided without formal support guarantees. We will make best efforts to respond to inquiries but cannot guarantee response times.
Last Updated: December 8, 2025
TL;DR: Use our free conversion tool responsibly. Don't upload files you don't own. Service is provided "as is" with no warranties. Verify converted files before use. Processing is local - your files never leave your device. We're not liable for damages. We may change or discontinue the service anytime.