3MF to OBJ converter
Drop a 3MF file and get an OBJ back in seconds. 3MF is zip-packaged, carries units and colour, used mostly for modern slicers like Bambu Studio, PrusaSlicer and OrcaSlicer. OBJ is plain text, read almost everywhere, the usual choice for older 3D software and CAD-adjacent tools. The conversion runs entirely in your browser, so your file never leaves your device.
Choose a file to see its details here. Nothing is uploaded: everything runs in your browser.
How to use the 3mf to obj converter
- 1Choose your 3MF fileDrag it onto the panel or click to browse. It's read locally and never uploaded.
- 2Check the previewOrbit the model and check the triangle count, size and materials before converting.
- 3Download the OBJExport a OBJ with one click. Downloads are included with every plan.
What carries over
- 3MF is Z-up, so the model is turned Y-up on import and keeps its orientation in the OBJ.
- Units: 3MF is millimetres, stored in the file and OBJ is unitless. Numbers are copied 1:1, so check the size in the target app.
3MF vs OBJ
| 3MF | OBJ | |
|---|---|---|
| Full name | 3D Manufacturing Format | Wavefront OBJ |
| Appearance | colours and print settings | basic materials in a separate .mtl file |
| Animation | No | No |
| Units | millimetres, stored in the file | unitless |
| Best for | modern slicers like Bambu Studio, PrusaSlicer and OrcaSlicer | older 3D software and CAD-adjacent tools |
Questions
- Is my 3MF file uploaded?
- No. The 3MF is parsed and the OBJ is written by JavaScript in your browser tab. The file never reaches our servers.
- Will the OBJ look the same as the 3MF?
- The geometry is identical. OBJ holds basic materials in a separate .mtl file, so surface appearance changes. See the notes above for this exact pair.
- Is there a file size limit?
- Files up to 150 MB open, but very large models depend on your device's memory. Desktop browsers handle big files best.