Input
3D Manufacturing Format
The modern replacement for STL: real-world units, colours and multiple objects per file.
3MF to STL converter
Convert 3MF to STL for free, directly in your browser. Files are never uploaded — everything runs on your own machine. No sign-up, no software to install.
Output
Stereolithography
The 3D printing format: triangles only, no colour, UV or hierarchy. Every slicer understands it.
- 3MF stores real-world millimetre dimensions, and they survive the conversion.
- STL stores triangles only, so colour, textures and UV coordinates are not carried over.
- The object hierarchy collapses into one solid mesh — that is what the format requires.
- The model is rotated Z-up automatically, the way slicers expect it.
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