claygroundSTL to 3MF converter
It runs in your browser. Nothing is uploaded.
STL to 3MF
- Kept. shape.
- Size. Written in the unit you pick, millimetres for printing.
The two types
- STL. STL describes a surface as triangles and nothing else: no colour, no units. Slicers read its numbers as millimetres. Opened by Cura, PrusaSlicer, Bambu Studio, Blender, MeshLab and Fusion 360.
- 3MF. 3MF is a zip of XML made for 3D printing. It names its units and can hold several objects and colours, which STL can’t. Opened by Cura, PrusaSlicer, Bambu Studio, Orca Slicer, Fusion 360 and Windows 3D Builder.
Questions
How do I convert STL to 3MF?
Drop the STL file on this page, check the size under What’s inside, and press Download 3MF. It runs in your browser, so there is no upload and no wait.
What does STL to 3MF keep?
Everything this page reads from STL fits in 3MF: shape.
What size will the 3MF be?
3MF names its unit, and the page writes millimetres, which slicers expect. If the size looks off, change File is in and Write as under What’s inside.
Will the 3MF print?
What’s inside says whether the surface is closed, which slicers need. If it is open, repair it in your slicer, Meshmixer or Blender first.
Is my file uploaded?
No. The file is opened and converted in your browser, and it stays on your device.
Is it free?
Yes. There is no account, no watermark and no limit on files.