Free Online FBX to GLB Converter
Convert FBX files to GLB for web 3D. Preserve materials and animations for Three.js and Babylon.js. Free, fast, no sign-up.
How to Convert FBX to GLB
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 GLB format, bundling geometry, materials, and textures into a single binary file.
Download Your GLB
Once complete, download your GLB 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 GLB for free with no registration, no watermarks, and no hidden costs.
Web-Ready Format
GLB 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 GLB with PBR-compatible properties.
Cross-Platform
Works on any device with a modern browser. No software installation required.
2 Ways to Convert FBX to GLB
Pick based on whether you need quick conversion or full animation control.
Online FBX to GLB Converter (This Tool)
Best for: quick, no-install conversion
- Drag and drop your .fbx file.
- Wait for the automatic conversion.
- Download the GLB file.
Pros: Free, no software install, produces web-ready GLB.
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 → GLB transfers geometry, materials, and animations. Review these items for a clean conversion.
PBR Material Conversion
FBX uses a different material model than GLB PBR (metallic-roughness). Some material properties may not map directly. Use Blender for precise material control.
Animation Transfer
FBX supports skeletal and morph animations. GLB also supports these. Verify that animations transfer correctly after conversion.
Scale Units
FBX typically uses centimeters. GLB uses meters. Check the model scale in your target viewer or engine after conversion.
Texture Embedding
FBX can embed textures or reference them externally. GLB always embeds textures in the binary. Ensure textures are accessible during conversion.
FBX vs GLB Format Comparison
| Feature | FBX | GLB |
|---|---|---|
| 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 → GLB and how to resolve them.
GLB materials look different from FBX
FBX and GLB use different material models. Use Blender to import the FBX, convert materials to Principled BSDF (PBR), then export as GLB.
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 GLB with animation export enabled.
Model scale is wrong in web viewer
FBX uses centimeters; GLB uses meters. The scale should convert automatically, but verify in your target viewer. Adjust if needed.
GLB file is very large
FBX files can be large due to embedded data. Use Blender's Draco compression in glTF export settings to reduce GLB 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 GLB: why convert?
FBX is proprietary and desktop-oriented. GLB is open, web-native, and loads in any browser via Three.js. Converting FBX to GLB brings your game and animation assets to the web.
Last updated: August 2026. Format details reference the FBX format overview and the glTF specification.
Frequently Asked Questions
How do I convert FBX to GLB?
Upload your .fbx file using the converter above. The tool converts it to GLB format automatically. Download the GLB file when conversion is complete.
Is this FBX to GLB converter free?
Yes, completely free. No registration, no watermarks, no hidden costs.
What is the difference between FBX and GLB?
FBX is Autodesk's proprietary format for game engines and 3D animation. GLB is the Khronos Group's open binary format for web 3D. FBX is desktop-oriented; GLB is web-native.
Does converting FBX to GLB preserve animations?
Both FBX and GLB 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 GLB 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 GLB preserve PBR materials?
Basic material properties transfer. FBX uses a different material model than GLB PBR (metallic-roughness). Use Blender for precise PBR conversion via Principled BSDF.
Why convert FBX to GLB?
GLB 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 GLB. GLB is open, compact, and web-native.
Can I convert FBX to GLB on Mac?
Yes. Our online converter works in any browser on macOS. You can also use Blender on Mac.
What software opens GLB files?
GLB 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 GLB better for web 3D?
GLB 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 GLB in Unity or Unreal?
Yes. Unity supports GLB via the glTFast package. Unreal Engine supports GLB via the glTF importer plugin. For native game engine support, FBX is still preferred.