Kept
- Triangles of every object
- One group per object
- Millimetre coordinates
Runs locally · no upload
Convert 3MF to OBJ
Turn a 3MF plate into OBJ meshes for editing or rendering. Objects become groups, millimetre coordinates stay as authored, and materials are not written to MTL.
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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
- 3MF materials as MTL: no material file is written
- Build plate and print settings
- Package metadata
Common mistakes
- A 3MF with only metadata and no mesh cannot be converted.
- Protected or encrypted 3MF files are rejected.
- A large multi-object plate can exceed 100 MB; split it in your slicer first.
For 3D printing
- OBJ is not a print format; use STL or 3MF for the slicer.
- Groups let you isolate parts before exporting a print mesh.
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
Does 3MF to OBJ keep the colours?+
No material file is written, so colours are not usable downstream. Convert to GLB instead if you need per-object colours.
Can I edit the result in Blender?+
Yes, OBJ is a standard import format; each 3MF object arrives as a separate group.
Are the units preserved?+
The millimetre numbers are kept as authored, but OBJ has no unit metadata; check the scale in your tool.
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.