One converter, five 3D formats
Convert 3MF to OBJ
Open a 3MF model, inspect the parsed geometry and export a OBJ copy. The page explains format-specific losses before download.
- 20 conversion directions
- STL · GLB · OBJ · FBX · 3MF
- Static geometry preview
3MF to OBJ converter
Files up to 50 MiB; scenes are bounded to 100 meshes and 2,000,000 triangles.
OBJ output writes static geometry and preserves normals and UV coordinates when they exist; MTL and texture files are not packaged.
Waiting for a file.
All supported conversions
Choose any source and a different target. Every link opens the same converter with that pair selected.
How the 3D converter works
Choose both formats
Set the real source format and the format you need to download.
Open and inspect
The browser parses the model and shows dimensions, mesh count and format-loss warnings.
Download the conversion
Export the visible static geometry and verify scale and materials in the destination application.
What changes from 3MF to OBJ
A 3MF source can contain triangle geometry, materials and colors, textures, print-production metadata.
For browser safety, this version accepts mesh objects and separate build items but rejects 3MF component graphs; flatten them in the source application first.
OBJ is a unitless static mesh format. This download contains one OBJ file and does not bundle MTL or texture sidecars.
Scale path: The unit declared by 3MF is converted to millimeters before preview and export. OBJ output is unitless and keeps coordinates in the millimeter working scale.
Guaranteed in this conversion: triangle geometry.
This static conversion does not transfer materials and colors, textures, print-production metadata.
Limits and checks you still need
- The first release exports the visible static mesh; rigs, animation clips, cameras and lights are not guaranteed across formats.
- OBJ is handled as one geometry file, without separate MTL files or external textures.
- Large or unusually complex files can exceed browser memory even below the file-size limit.
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Frequently asked questions
Can I convert 3MF to OBJ for free?
Yes. The converter runs without an upload API or account and downloads the result from this tab.
Does the model leave my device?
No model bytes are sent to AIPRINTGEN. Libraries load only when needed, then conversion uses the local File object.
Will textures and animation survive?
Not in every direction. The warning beside the result reflects the selected target; inspect the downloaded file in its destination app.
Why should I check the scale?
STL and OBJ do not declare a universal unit, while GLB, FBX and 3MF have different unit conventions.
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