Convert FBX to GLTF Online (Free & Secure)
FBX to glTF 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 glTF with its materials intact.
Select .FBX file
or drag & drop .fbx file here
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⚡ AI Summary & Quick Answer
FBX to glTF 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 glTF with its materials intact.
Legacy and DCC formats are heavy and awkward on the web; converting them gives you a compact asset that loads in any modern browser. 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. glTF (.gltf) is a JSON scene description that references separate .bin and image files, holding indexed triangle meshes with optional morph targets and skins, and is typically used in Blender, Visual Studio Code glTF tools, and three.js.
The converter parses the FBX scene graph, normalises meshes and materials, and re-exports them as glTF. Units change from centimeters by default, with a settable unit scale to meters (fixed by the glTF specification). 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
.gltfTarget format: glTF (JSON)
Standard open-source 3D scene description format using JSON with external or embedded buffers and textures.
- Structure: a JSON scene description that references separate .bin and image files
- Materials: PBR metallic-roughness materials
- Units: meters (fixed by the glTF specification)
- Axis: Y-up, right-handed
- Opens in: Blender, Cesium, three.js or any glTF 2.0 viewer
What happens to your data in FBX → glTF conversion
Conversion route: FBX → GLB → glTF (parsed into a GLB scene, then exported as glTF).
| Aspect | Result | Outcome |
|---|---|---|
| Geometry | Preserved | FBX stores polygon meshes with layered UVs, skins, blend shapes and scene hierarchy; glTF stores indexed triangle meshes with optional morph targets and skins. 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 glTF 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. glTF can reference or embed textures too, so images and UV mapping stay linked. |
| Vertex colours | Preserved | Per-vertex colours in FBX are written to glTF as vertex colour data. |
| Animation | Preserved | FBX provides skeletal rigs, blend shapes and baked animation clips; glTF supports it as well, so clips can travel with the model. |
| Units & scale | Adapted | FBX uses centimeters by default, with a settable unit scale; glTF uses meters (fixed by the glTF specification). 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 glTF is Y-up, right-handed. The converter writes a consistent orientation, but verify the up axis in your target software. |
Expect the glTF file to be roughly 1.7x smaller than the FBX source, since glTF is similar to GLB, but split across several files.
Why convert FBX to glTF?
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 → glTF specifically, preserved: geometry, materials, textures, vertex colours, and animation; adapted: units & scale and orientation. Expect the glTF file to be roughly 1.7x smaller than the FBX source, since glTF is similar to GLB, but split across several files.
Why choose glTF
glTF is the right target when you are keeping a human-readable scene you can diff in version control. It also fits scenarios such as debugging materials and node hierarchies and feeding pipelines that expect separate buffers. Legacy and DCC formats are heavy and awkward on the web; converting them gives you a compact asset that loads in any modern browser.
Where the result opens
After conversion you can open the .gltf file in Blender, Cesium, three.js or any glTF 2.0 viewer.
Step-by-Step Guide: FBX → glTF
- 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 glTF
Press the Convert to glTF button. The pipeline follows FBX → GLB → glTF (parsed into a GLB scene, then exported as glTF), which usually takes a few seconds for models under 100 MB.
- 4
Download the .gltf file
Your glTF file downloads automatically. Open it in Blender and Visual Studio Code glTF tools to confirm scale and orientation.
Tips for FBX → glTF
- Version differences between FBX releases cause import warnings (FBX source).
- Relative paths to .bin and texture files break when the files are separated (glTF target).
- Always verify real-world size: FBX is centimeters by default, with a settable unit scale, while glTF is meters (fixed by the glTF specification).
Frequently Asked Questions
How do I convert FBX to glTF without losing quality?
Upload the .fbx file and press convert; the route is FBX → GLB → glTF (parsed into a GLB scene, then exported as glTF). Geometry is carried over exactly; materials are preserved, and textures stay linked through UV coordinates.
Does FBX to glTF conversion keep textures?
In FBX, textures may be embedded or referenced externally depending on the exporter. glTF can reference or embed textures too, so images and UV mapping stay linked.
Why does my glTF model look the wrong size or rotation?
FBX uses centimeters by default, with a settable unit scale; glTF uses meters (fixed by the glTF specification). 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 glTF is Y-up, right-handed. The converter writes a consistent orientation, but verify the up axis in your target software.
Will the glTF file be bigger or smaller than my FBX file?
Expect the glTF file to be roughly 1.7x smaller than the FBX source, since glTF is similar to GLB, but split across several files.
What software can open the converted glTF file?
glTF files open in Blender, Cesium, three.js or any glTF 2.0 viewer. If you need to go back, use the glTF 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.