OFF to 3MF Converter
Drop a .off file below and get a .3mf back. The conversion happens inside this page using WebAssembly, so nothing is uploaded to a server and there is no queue to wait in.
- Private by designFiles stay on your device.
- No queueConversion starts instantly.
- No sign upNo account, no limits per day.
Compatibility
What survives the trip from OFF to 3MF.
| Feature | OFF | 3MF | Result |
|---|---|---|---|
| Geometry | Supported | Supported | Supported |
| Vertex colors | Partial | Supported | Partial |
| Materials | Not supported | Partial | Not supported |
| Textures | Not supported | Not supported | Not supported |
| Scene hierarchy | Not supported | Supported | Not supported |
| Animation | Not supported | Not supported | Not supported |
How to convert OFF to 3MF
- 1Add your OFF fileDrop the .off file into the box, or pick it from disk. Multiple files are converted one after another.
- 2Pick 3MF as the output3MF is already selected on this page. Adjust scale, up axis or triangle budget if the target application is picky.
- 3Download the resultThe .3mf file is written locally and appears as a download button next to your file.
About OFF
OFF lists vertex counts, then vertices, then polygons. That is nearly all there is to it, which is why computational geometry papers, mesh processing libraries and university courses lean on it so heavily.
- MeshLab
- Geomview
- CGAL
- libigl
About 3MF
3MF is a zipped XML package that fixes what STL never had: real units, colours, materials, multiple objects and print metadata. Every current slicer reads it and it is the default in Bambu Studio and PrusaSlicer.
- PrusaSlicer
- Bambu Studio
- Cura
- Windows 3D Builder
- Fusion 360
Questions
Is this OFF to 3MF converter free?
Yes. There is no account, no daily quota and no watermark. The tool is a static web page and the work is done by your own CPU, so there are no server costs to pass on.
Are my files uploaded anywhere?
No. MeshFormat loads a WebAssembly build of the geometry kernels into your browser and reads the file locally. You can open the network tab and confirm that nothing leaves the page, or disconnect after the page has loaded and keep converting.
How large can a OFF file be?
The practical limit is your available memory rather than an arbitrary cap. Models up to a few hundred megabytes work on a normal laptop; very dense scans convert faster if you lower the triangle budget in the options.
Which programs open 3MF files?
PrusaSlicer, Bambu Studio, Cura, Windows 3D Builder and most other tools that work with 3D meshes read .3mf directly.