Convert FBX to OBJ Online (Free & Secure)
FBX to OBJ conversion on iLove3DM takes one upload and no account. Your FBX model, built from polygon meshes with layered UVs, skins, blend shapes and scene hierarchy, is rewritten as OBJ with its materials intact.
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⚡ AI Summary & Quick Answer
FBX to OBJ conversion on iLove3DM takes one upload and no account. Your FBX model, built from polygon meshes with layered UVs, skins, blend shapes and scene hierarchy, is rewritten as OBJ with its materials intact.
Both formats are designed for moving assets between modelling packages, so the differences come down to hierarchy, units and animation. FBX (.fbx) is a proprietary Autodesk container, usually binary. It holds polygon meshes with layered UVs, skins, blend shapes and scene hierarchy and is most often opened in Unity, Unreal Engine, and Maya. OBJ (.obj) is plain ASCII text with a companion .mtl material file, holding polygons (triangles, quads and n-gons) with shared UV and normal pools, and is typically used in Blender, Maya, and 3ds Max.
The converter parses the FBX scene graph, normalises meshes and materials, and re-exports them as OBJ. Units change from centimeters by default, with a settable unit scale to unitless (the importing application decides the scale). Everything runs in your browser or an isolated, auto-purged instance, so models stay private.
.fbxAbout FBX (Autodesk Filmbox)
Industry-standard exchange format for games, animation, and visual effects supporting complex skeletal rigs and blend shapes.
- Structure: a proprietary Autodesk container, usually binary
- Materials: Lambert or Phong materials with optional PBR extensions
- Units: centimeters by default, with a settable unit scale
- Axis: Y-up by default, but exporters can change it
- Opens in: Unity, Unreal Engine, Maya, 3ds Max or Blender
.objTarget format: OBJ (Wavefront)
Universal geometry definition format supported by almost every 3D modeling and rendering software.
- Structure: plain ASCII text with a companion .mtl material file
- Materials: Phong-style MTL materials (diffuse, specular, ambient)
- Units: unitless (the importing application decides the scale)
- Axis: conventionally Y-up, but not enforced
- Opens in: Blender, Maya, 3ds Max, ZBrush or MeshLab
What happens to your data in FBX → OBJ conversion
Conversion route: FBX → GLB → OBJ (parsed into a GLB scene, then exported as OBJ).
| Aspect | Result | Outcome |
|---|---|---|
| Geometry | Preserved | FBX stores polygon meshes with layered UVs, skins, blend shapes and scene hierarchy; OBJ stores polygons (triangles, quads and n-gons) with shared UV and normal pools. Surfaces are retriangulated where needed and positions, normals and UV coordinates are carried across. |
| Materials | Preserved | FBX uses Lambert or Phong materials with optional PBR extensions and OBJ can represent the same information, so base colour and surface settings are preserved. |
| Textures | Preserved | In FBX, textures may be embedded or referenced externally depending on the exporter. OBJ can reference or embed textures too, so images and UV mapping stay linked. |
| Vertex colours | Adapted | Per-vertex colours from FBX are kept where OBJ allows them, but support in OBJ is limited and some viewers will ignore them. |
| Animation | Not supported | FBX provides skeletal rigs, blend shapes and baked animation clips, but OBJ is a static format and animation is not exported. |
| Units & scale | Adapted | FBX uses centimeters by default, with a settable unit scale; OBJ uses unitless (the importing application decides the scale). Check the scale in your target application, and use the Scale tool if the model looks too big or too small. |
| Orientation | Adapted | FBX is Y-up by default, but exporters can change it and OBJ is conventionally Y-up, but not enforced. The converter writes a consistent orientation, but verify the up axis in your target software. |
Expect the OBJ file to be roughly 1.9x larger than the FBX source, because OBJ is large, because every coordinate is stored as text.
Why convert FBX to OBJ?
Why leave FBX
People most often convert from FBX when they are lightening a heavy FBX before sharing it. Other common cases include bringing a game-engine asset into a web or AR workflow and extracting geometry and materials from an animation package. In FBX → OBJ specifically, preserved: geometry, materials, and textures; adapted: vertex colours, units & scale, and orientation; not supported by OBJ: animation. Expect the OBJ file to be roughly 1.9x larger than the FBX source, because OBJ is large, because every coordinate is stored as text.
Why choose OBJ
OBJ is the right target when you are sending geometry to sculpting and texturing software. It also fits scenarios such as exchanging a mesh with almost any 3D application and archiving a model in a simple, inspectable format. Both formats are designed for moving assets between modelling packages, so the differences come down to hierarchy, units and animation.
Where the result opens
After conversion you can open the .obj file in Blender, Maya, 3ds Max, ZBrush or MeshLab.
Step-by-Step Guide: FBX → OBJ
- 1
Upload your .fbx file
Drag your FBX model onto the converter or click to browse. Textures may be embedded or referenced externally depending on the exporter; no extra files are required.
- 2
Check your free quota
Free accounts can run a few conversions per day; signing in unlocks tracking of your remaining uses. No watermark is ever added.
- 3
Convert to OBJ
Press the Convert to OBJ button. The pipeline follows FBX → GLB → OBJ (parsed into a GLB scene, then exported as OBJ), which usually takes a few seconds for models under 100 MB.
- 4
Download the .obj file
Your OBJ file downloads automatically. Open it in Blender and Maya to confirm scale and orientation.
Tips for FBX → OBJ
- Version differences between FBX releases cause import warnings (FBX source).
- No unit information means scale surprises between applications (OBJ target).
- Always verify real-world size: FBX is centimeters by default, with a settable unit scale, while OBJ is unitless (the importing application decides the scale).
Frequently Asked Questions
How do I convert FBX to OBJ without losing quality?
Upload the .fbx file and press convert; the route is FBX → GLB → OBJ (parsed into a GLB scene, then exported as OBJ). Geometry is carried over exactly; materials are preserved, and textures stay linked through UV coordinates.
Does FBX to OBJ conversion keep textures?
In FBX, textures may be embedded or referenced externally depending on the exporter. OBJ can reference or embed textures too, so images and UV mapping stay linked.
Why does my OBJ model look the wrong size or rotation?
FBX uses centimeters by default, with a settable unit scale; OBJ uses unitless (the importing application decides the scale). Check the scale in your target application, and use the Scale tool if the model looks too big or too small. FBX is Y-up by default, but exporters can change it and OBJ is conventionally Y-up, but not enforced. The converter writes a consistent orientation, but verify the up axis in your target software.
Will the OBJ file be bigger or smaller than my FBX file?
Expect the OBJ file to be roughly 1.9x larger than the FBX source, because OBJ is large, because every coordinate is stored as text.
What software can open the converted OBJ file?
OBJ files open in Blender, Maya, 3ds Max, ZBrush or MeshLab. If you need to go back, use the OBJ to FBX converter.
Is it safe to upload my FBX model?
Yes. Files are processed in your browser or on isolated instances and purged right after conversion. They are never used to train AI models, and no watermark is added.