Why convert OBJ to 3MF?
3MF can store explicit units and manufacturing-related information in a single package. It is generally better suited to modern 3D printing workflows than OBJ.
CAD & 3D
OBJ to 3MF Converter
Convert OBJ models to 3MF online. Preserve mesh geometry and selected units in a modern 3D printing format directly in your browser.
Tool
OBJ to 3MF Converter
Convert OBJ models to 3MF online. Preserve mesh geometry and selected units in a modern 3D printing format directly in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free online OBJ to 3MF Converter to transform Wavefront OBJ geometry into the modern 3MF format used by many slicers and additive manufacturing applications. Load the OBJ file, inspect the model, select the intended unit, preserve mesh geometry, and download the converted 3MF package. The conversion takes place locally in your browser without sending your model to a server.
Examples
- multi-group.obj
Frequently Asked Questions
Do I need the MTL file?
No. This browser converter reads OBJ geometry only. MTL material files are not required and are not imported.
Can texture files be included?
No. Texture transfer requires robust companion MTL and image handling, which is not exposed by this converter.
How do I choose the correct model unit?
OBJ files do not reliably define a physical unit. Select the unit used when the model was created and verify the displayed dimensions before exporting the 3MF file.
Can multiple OBJ objects be preserved?
Yes. OBJ object and group definitions can be represented as separate 3MF objects where the source structure is clear.
Will conversion make the model printable?
Not automatically. The converted file may still contain open edges, non-manifold geometry, self-intersections, incorrect dimensions, or walls that are unsuitable for the selected manufacturing process.
Is my OBJ model uploaded?
No. The OBJ geometry file is processed locally in your browser.
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