How to convert STL to 3MF
- Click Choose STL or drop your file — it's processed in the browser.
- Check the model in the preview.
- Click Convert to 3MF.
- Download the 3MF — it opens in Bambu Studio or OrcaSlicer.
STL to 3MF Converter Online
Upload an STL — the tool previews the model and converts it to 3MF right in your browser. Your file never leaves your device.
Why convert STL to 3MF
3MF is the modern container format for Bambu Studio and OrcaSlicer: smaller and more robust than STL, it stores units and can carry print settings. The conversion wraps the STL geometry into a valid 3MF with millimeter units.
FAQ
Is the file uploaded to a server?
No, everything runs in your browser — the file stays with you.
Will the result open in Bambu Studio and OrcaSlicer?
Yes, a spec-valid 3MF with millimeter units is produced.
Are colors and print settings added?
No. STL has no color or settings, so the 3MF carries geometry only.
What file sizes are supported?
Up to 150 MB.
Why is 3MF better than STL?
3MF is smaller, stores units and metadata, and is the native format of modern slicers.
