Kept
- Triangle geometry
- Shape and dimensions
- A ZIP package with the 3MF core model
Runs locally · no upload
Convert STL to 3MF
Wrap an STL mesh in a 3MF package that Bambu Studio, PrusaSlicer and Cura read natively. The triangles are kept and the unit is declared as millimetres.
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- 5 credits per file
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Drop a 3D file hereSTL, OBJ, PLY, GLB, glTF, 3MF or STEP · up to 100 MB · processed locallyYour file never leaves this browser.
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What changes in the conversion
Dropped
- Nothing from the STL: it only contains triangles
- No colour or material is invented
Common mistakes
- STL has no unit: the 3MF declares millimetres, so rescale the model if it was authored in metres.
- A non-watertight mesh stays non-watertight after conversion.
- Files above 100 MB are refused.
For 3D printing
- 3MF is the modern print format: it carries a unit and can hold several objects.
- If you need colour or per-part settings, add them in a 3MF-aware tool after conversion.
Drop the file — it is read locally, never uploaded.
Choose the options, then convert or compress.
Download the result and open it in your slicer or 3D software.
Frequently asked questions
Is 3MF better than STL for printing?+
Yes for modern slicers: 3MF declares units, stores colours and can hold several objects in one package.
Does the conversion set the scale?+
It declares millimetres. The numbers themselves are unchanged, so check the model size in your slicer.
Can I open the 3MF in Bambu Studio or PrusaSlicer?+
Yes. Both read 3MF natively; this file uses the core specification without printer-specific metadata.
Need a model instead of a conversion?
Turn a photo, a drawing or a logo into a 3D model, then export it in the format you need.