Free Online FBX to 3MF Converter
Isolated Blender / OpenCascade conversion into static meshes. Maximum 30 MB; animation, rigs and construction history are not retained.
Upload your FBX file
Select one model together with its MTL, BIN and texture files. Resource filenames must be unique; the combined size must fit the upload limit. For missing resources, package the model as GLB in its source application.
Scale factor. Leave empty to keep the original size.
Preview in 3D
How to convert FBX to 3MF
Select your FBX file
Choose one model and its companion material, buffer and image files when applicable. The combined upload limit is 50 MB.
Check the preview and options
Check orientation, dimensions and required resources. Image reliefs are previewed after conversion; set their width and depth first.
Convert and download 3MF
Convert, then inspect the result and any warnings. Textured OBJ results download as a ZIP containing the OBJ, MTL and textures.
Why choose this converter
Real mesh conversion
Geometry is parsed and exported into the destination format.
Inspect the result
Use the preview, output statistics and format warnings to check the conversion.
Server conversion
A server mesh pipeline converts geometry. OBJ resources are returned together in a ZIP.
Static model scope
Animations, rigs, CAD construction history and unsupported material extensions are outside this converter's scope.
What changes in this conversion
- Animation will be dropped.
What Is a FBX File? / 3MF
FBX
FBX is Autodesk's interchange format and the long-standing lingua franca of game art. It carries meshes, skeletons, animation curves, cameras and lights, and remembers units — which is why studios still trade assets in it even though the format is proprietary.
- Carries rigs, animation and scene hierarchy
- First-class import in Unity and Unreal
- Handles units, so scale survives a round trip
- Proprietary and complex to parse
- No open-source Python reader, so server-side conversion is limited
- Binary variant is opaque to inspection
3MF
3MF is the modern replacement for STL, stewarded by the 3MF Consortium. It is a ZIP of XML parts, so it carries units, colour, multiple objects, materials and print settings — everything STL throws away.
- Keeps units, so scale is unambiguous
- Colour, materials and multiple objects
- Compact compared with an equivalent STL
- Older slicers may not read it
- ZIP+XML is more work to parse than STL
- Still no animation
FBX vs 3MF
| Property | FBX | 3MF |
|---|---|---|
| Encoding | binary or ASCII | ZIP + XML |
| Colour | Yes | Yes |
| Texture maps | Yes | Yes |
| Materials | Yes | Yes |
| Animation | Yes | No |
| Units | Yes | Yes |
| Best for 3D printing | Yes | Yes |
| Best for the web | No | No |
| Best for game engines | Yes | No |
Before you convert
- Confirm the source really is FBX — a renamed file will not parse.
- Check the bounding box in the preview; conversion does not fix a wrong scale.
- Decimate dense meshes before converting if the target is a slicer.
Common problems
The upload is rejected
Check the file really is FBX and is under 50MB.
The preview is empty
The file is probably corrupt or uses an unsupported feature. Re-export it from the source application.
The result looks different from the original
Read the format notes above — some loss is inherent to the target format, not a conversion error.
Frequently Asked Questions
Can I convert FBX to 3MF here?
Yes. Select the file and any companion resources, check the preview, then convert and download.
Is an account or payment needed?
No. Available conversions are free and do not require an account.
What is the file size limit?
50 MB combined, with at most one model and 63 companion files.
Will materials and textures survive?
This conversion exports geometry. STL and this service's 3MF writer do not retain materials or textures; PLY may retain vertex colors. Use GLB when materials are required.
Are animation and rigs preserved?
No animation or rig preservation is promised. Browser conversions export static meshes; check proprietary material features and real-world scale in the result.
Are uploaded models published?
No. Conversion does not add models to the public gallery. Browser USDZ export stays local; server conversions use temporary download files.