Free Online OBJ to FBX Converter
Convert OBJ to FBX for Unity, Unreal Engine, Maya, and 3ds Max. Single-file output with materials. Free, fast, no sign-up.
How to Convert OBJ to FBX
Upload Your OBJ File
Drag and drop your .obj file onto the converter. Include the .mtl file for material support.
Automatic Conversion
The converter packages your OBJ geometry and MTL materials into FBX format, suitable for game engines and 3D animation software.
Download Your FBX
Once complete, download your FBX file and import it into Unity, Unreal Engine, Maya, 3ds Max, or Blender.
Why Choose Our Converter
Free & No Sign-Up
Convert OBJ to FBX for free with no registration, no watermarks, and no hidden costs.
Single File Output
OBJ requires separate .obj, .mtl, and texture files. FBX packages everything into one self-contained file for easy sharing.
Game Engine Compatible
FBX is the industry standard for Unity and Unreal Engine. Import the converted file directly into your game project.
Material Preservation
MTL materials from the OBJ file are transferred to FBX material format for use in desktop 3D software.
2 Ways to Convert OBJ to FBX
Online OBJ to FBX Converter (This Tool)
Best for: quick conversion
- Drag and drop your .obj file.
- Wait for the automatic conversion.
- Download the FBX file.
Pros: Free, no software install, works on any device.
Cons: Requires internet. OBJ has no animation data, so FBX output is static.
Blender (Free Desktop Software)
Best for: adding materials and rigging
- Open Blender and import OBJ (File > Import > Wavefront).
- Assign or fix materials as needed.
- Go to File > Export > FBX (.fbx).
- Configure export settings and click Export.
Pros: Free. Can add materials, rigging, and animations before FBX export.
Cons: Requires installing Blender.
Quick Checks Before You Convert
OBJ Has No Animations
OBJ format does not support animations or skeletal rigging. The converted FBX will be a static model with no animation data. To add animations, use Blender after conversion.
Include MTL for Materials
Without the .mtl companion file, the FBX output will have default materials. Upload both .obj and .mtl for best results.
Texture File Paths
MTL files reference texture images by path. Ensure texture files are available. FBX can embed textures, but they need to be accessible during conversion.
Scale Units
OBJ uses arbitrary units. FBX typically uses centimeters. Check the scale in your target software (Unity and Unreal have different default unit settings).
Fixing Common Issues After Conversion
FBX has no textures in game engine
Texture images were not included during conversion. Use Blender to import OBJ+MTL+textures, then enable 'Embed Textures' in FBX export settings.
Model scale is wrong in Unity or Unreal
OBJ and FBX use different unit conventions. In Unity, adjust the Mesh Factor in import settings. In Unreal, set Scale to 100 (centimeters).
Materials look different
OBJ/MTL uses a simple material model. FBX supports more material properties. Use Blender to convert materials to a modern workflow before exporting FBX.
Cannot add animations to converted FBX
OBJ has no animation data. The FBX is a static mesh. To add rigging and animations, import the FBX into Blender or Maya, create a skeleton, skin the mesh, then re-export as FBX.
OBJ vs FBX Format Comparison
| Feature | OBJ | FBX |
|---|---|---|
| Full name | Wavefront Object | Autodesk FBX |
| Maintained by | Wavefront Technologies | Autodesk |
| Structure | Text-based | Proprietary binary (or ASCII) |
| Animations | No | Yes |
| Skeletal rigging | No | Yes |
| Materials | Yes (MTL) | Yes (embedded) |
| Cameras / lights | No | Yes |
| Multiple objects | Yes (named groups) | Yes (scene hierarchy) |
| Primary use | Static model exchange | Game dev, animation |
| Game engine support | Import only | Native (Unity, Unreal) |
What Is an OBJ File?
OBJ is a 3D model file format that stores mesh geometry — vertices, faces, texture coordinates, and normals — as human-readable text, with optional material definitions in a companion .mtl file.
Developed by Wavefront Technologies in the 1990s, OBJ is widely used in CAD, animation, and 3D scanning. It is the most universally supported 3D format, readable by virtually every 3D application.
OBJ vs FBX: why convert?
OBJ stores only static geometry and materials. FBX supports animations, skeletal rigging, cameras, and lights — making it the industry standard for game development. Converting OBJ to FBX prepares your model for Unity, Unreal Engine, Maya, and 3ds Max workflows where animation and scene data are required.
Last updated: August 2026. Format details reference the OBJ file specification and the FBX format overview.
Frequently Asked Questions
How do I convert OBJ to FBX?
Upload your .obj file using the converter above. Include the .mtl file for materials. The tool converts to FBX format. Download the FBX when complete.
Is this OBJ to FBX converter free?
Yes, completely free. No registration, no watermarks, no hidden costs.
Does converting OBJ to FBX preserve textures?
If the OBJ has a companion .mtl file with texture references, basic materials are transferred to the FBX output. For full texture embedding, use Blender to import and export with embed option.
What is the difference between OBJ and FBX?
OBJ is a simple geometry format requiring separate .mtl material files. FBX is a comprehensive format supporting geometry, materials, animations, rigging, cameras, and lights in one file. FBX is the standard for game engines; OBJ is for static model exchange.
Can I convert OBJ to FBX with animations?
No. OBJ format does not support animations or skeletal rigging. The converted FBX will be a static model. To create animated FBX files, import the OBJ into Blender or Maya, create a rig, add animations, then export as FBX.
How do I convert OBJ to FBX in Blender?
In Blender, go to File > Import > Wavefront (.obj). Then go to File > Export > FBX (.fbx). Configure export settings (materials, scale, animations) and click Export FBX.
Can I import the FBX into Unity?
Yes. FBX is the native format for Unity. Drag the FBX file into your Unity Assets folder. Unity automatically imports the mesh, materials, and any embedded textures.
Can I import the FBX into Unreal Engine?
Yes. FBX is also the standard format for Unreal Engine. Use Import to bring the FBX into your Content Browser. Unreal imports meshes, materials, and skeletal data.
Why convert OBJ to FBX?
FBX packages geometry and materials into a single file (OBJ requires multiple files). FBX is the standard for game engines (Unity, Unreal). FBX supports animations and rigging (OBJ does not). For game development, FBX is always preferred over OBJ.
Can I convert OBJ to FBX on Mac?
Yes. Our online converter works in any browser on macOS. Alternatively, use Blender or Maya on Mac.