Free Online FBX to glTF Converter
Convert FBX files to glTF for web 3D. Preserve materials and animations for Three.js and Babylon.js. Free, fast, no sign-up.
How to Convert FBX to glTF
Upload Your FBX File
Drag and drop your .fbx file onto the converter. The tool parses FBX geometry, materials, and animations.
Automatic Conversion
The converter transforms your FBX data into glTF format, bundling geometry, materials, and textures into a single binary file.
Download Your glTF
Once complete, download your glTF file and use it in Three.js, Babylon.js, Google Model Viewer, or any web 3D viewer.
Why Choose Our Converter
Free & No Sign-Up
Convert FBX to glTF for free with no registration, no watermarks, and no hidden costs.
Web-Ready Format
glTF is the standard format for web-based 3D. The output loads natively in Three.js, Babylon.js, and Google Model Viewer.
Material Preservation
Materials and textures from the FBX file are transferred to glTF with PBR-compatible properties.
Cross-Platform
Works on any device with a modern browser. No software installation required.
2 Ways to Convert FBX to glTF
Pick based on whether you need quick conversion or full animation control.
Online FBX to glTF Converter (This Tool)
Best for: quick, no-install conversion
- Drag and drop your .fbx file.
- Wait for the automatic conversion.
- Download the glTF file.
Pros: Free, no software install, produces web-ready glTF.
Cons: Requires internet. Some PBR material properties may need adjustment.
Blender (Free Desktop Software)
Best for: material and animation editing
- Open Blender and import FBX (File > Import > FBX).
- Verify materials and animations.
- Go to File > Export > glTF 2.0 (.glb).
- Click Export.
Pros: Free. Full control over material and animation export.
Cons: Requires installing Blender.
Quick Checks Before You Convert
FBX → glTF transfers geometry, materials, and animations. Review these items for a clean conversion.
PBR Material Conversion
FBX uses a different material model than glTF PBR (metallic-roughness). Some material properties may not map directly. Use Blender for precise material control.
Animation Transfer
FBX supports skeletal and morph animations. glTF also supports these. Verify that animations transfer correctly after conversion.
Scale Units
FBX typically uses centimeters. glTF uses meters. Check the model scale in your target viewer or engine after conversion.
Texture Embedding
FBX can embed textures or reference them externally. glTF always embeds textures in the binary. Ensure textures are accessible during conversion.
FBX vs glTF Format Comparison
| Feature | FBX | glTF |
|---|---|---|
| Full name | Autodesk FBX | glTF Binary |
| Maintained by | Autodesk | Khronos Group |
| Structure | Proprietary binary | Open binary container |
| PBR materials | Limited | Yes (metallic-roughness) |
| Animations | Yes | Yes |
| Skeletal rigging | Yes | Yes |
| Web native | No | Yes (Three.js, WebGL) |
| License | Proprietary | Open (royalty-free) |
| Primary use | Game engines, desktop 3D | Web 3D, AR/VR, mobile |
| File size | Large | Compact (binary) |
Fixing Common Issues After Conversion
Typical errors after FBX → glTF and how to resolve them.
glTF materials look different from FBX
FBX and glTF use different material models. Use Blender to import the FBX, convert materials to Principled BSDF (PBR), then export as glTF.
Animations are missing or broken
Verify the FBX contains animation data. If animations don't transfer, use Blender to import, check the Action Editor, then export glTF with animation export enabled.
Model scale is wrong in web viewer
FBX uses centimeters; glTF uses meters. The scale should convert automatically, but verify in your target viewer. Adjust if needed.
glTF file is very large
FBX files can be large due to embedded data. Use Blender's Draco compression in glTF export settings to reduce glTF size by 50-90%.
What Is an FBX File?
FBX (Filmbox) is a proprietary 3D file format developed by Autodesk. It stores geometry, materials, textures, animations, skeletal rigging, morph targets, cameras, lights, and scene hierarchy.
FBX is the industry standard for game development and 3D animation, natively supported by Unity, Unreal Engine, Maya, 3ds Max, and Blender.
FBX vs glTF: why convert?
FBX is proprietary and desktop-oriented. glTF is open, web-native, and loads in any browser via Three.js. Converting FBX to glTF frees your assets from a proprietary format into an open, editable pipeline.
Last updated: August 2026. Format details reference the FBX format overview and the glTF specification.
Frequently Asked Questions
How do I convert FBX to glTF?
Upload your .fbx file using the converter above. The tool converts it to glTF format automatically. Download the glTF file when conversion is complete.
Is this FBX to glTF converter free?
Yes, completely free. No registration, no watermarks, no hidden costs.
What is the difference between FBX and glTF?
FBX is Autodesk's proprietary format for game engines and 3D animation. glTF is the Khronos Group's open binary format for web 3D. FBX is desktop-oriented; glTF is web-native.
Does converting FBX to glTF preserve animations?
Both FBX and glTF support skeletal animations and morph targets. Animation data should transfer during conversion. If animations are missing, use Blender to verify and re-export.
How do I convert FBX to glTF in Blender?
In Blender, go to File > Import > FBX (.fbx). Then go to File > Export > glTF 2.0 (.glb). Click Export. Materials and animations transfer automatically.
Does FBX to glTF preserve PBR materials?
Basic material properties transfer. FBX uses a different material model than glTF PBR (metallic-roughness). Use Blender for precise PBR conversion via Principled BSDF.
Why convert FBX to glTF?
glTF is the standard for web-based 3D. If you need to display an FBX model in a web browser, Three.js, or Babylon.js, convert it to glTF. glTF is open, compact, and web-native.
Can I convert FBX to glTF on Mac?
Yes. Our online converter works in any browser on macOS. You can also use Blender on Mac.
What software opens glTF files?
glTF files can be opened by Three.js, Babylon.js, Google Model Viewer, Blender, Microsoft Paint 3D, Facebook 3D Posts, and any glTF-compatible viewer.
Is FBX or glTF better for web 3D?
glTF is always better for web 3D. It is open, compact, and loads natively in browsers. FBX is proprietary and requires plugins or conversion for web use.
Are my files safe?
Yes. Files are processed securely and auto-deleted after conversion. We do not store your 3D models permanently.
Can I use the converted glTF in Unity or Unreal?
Yes. Unity supports glTF via the glTFast package. Unreal Engine supports glTF via the glTF importer plugin. For native game engine support, FBX is still preferred.