Convert FBX to GLB Online — Free
Upload a Autodesk FBX file and download it as GL Binary. Runs entirely in your browser — no server uploads.
About These Formats
Autodesk FBX
FBX is Autodesk's proprietary format for 3D scenes. It supports complex geometry, skeletal animations, blend shapes, materials, and multi-object scenes.
Used with
Maya, 3ds Max, MotionBuilder, Unity, Unreal Engine, and game art pipelines.
GL Binary
GLB is the binary form of the GLTF format — a compact, web-optimized container that bundles geometry, textures, and animations into a single file.
Used with
Three.js, Babylon.js, React Three Fiber, Unity, Unreal Engine, Blender, AR/VR applications.
What Transfers from FBX to GLB
A breakdown of which data survives the FBX-to-GLB conversion.
3D Geometry
Vertices, faces, and normals always transfer
Textures & Materials
Diffuse map → albedo; roughness/metallic estimated from specular
Animations
Skeletal animations and morph targets transfer
Vertex Colors
Per-vertex color data transfers
Multiple Objects
Scene hierarchy and multiple objects transfer
When to Convert FBX to GLB
Convert FBX to GLB when you need a web-ready, self-contained 3D asset. GLB is the preferred format for Three.js, React Three Fiber, Babylon.js, and Needle Engine. It bundles geometry, textures, and animations into a single binary file, making it ideal for fast web loading and AR/VR applications.
FBX to GLB — What to Know Before Converting
FBX uses Phong or Lambert shading rather than PBR. The converter maps diffuse colour to albedo and estimates roughness from specular intensity. The result is a working PBR mesh but may not match the original look exactly — open the converted file and adjust roughness and metallic values as needed.
FBX is Autodesk's proprietary format widely used in game art pipelines. Embedded textures and UV data transfer cleanly, but FBX's Phong shading is remapped to PBR during export. After converting, review material values in a GLB viewer and tweak roughness and metallic sliders before importing into your game engine.
The GLB output bundles all geometry, materials, and textures into a single self-contained binary — no companion files needed. Binary encoding typically reduces file size by 20–40% compared to text-based source formats. The file loads directly in Three.js, Babylon.js, React Three Fiber, Unity (GLTF importer), and Unreal Engine's built-in GLTF pipeline.
Other FBX Conversions
Tips for the Best FBX to GLB Result
Set the model origin to the centre of mass before exporting from your DCC tool. A misplaced pivot causes models to appear offset or rotate incorrectly in Three.js and AR viewers.
Apply all transforms (scale, rotation, location) before export — un-applied transforms produce unexpected scaling when the GLB is loaded in another application.
Keep combined texture size under 4 MB for smooth web delivery. Use the Texture Resizer tool to downscale large maps if needed.
In Unity, install the "GLTF Fast" or "UnityGLTF" package — Unity's default model importer does not support GLB natively.
Validate the GLB at gltf.report or the Khronos GLTF Viewer before deploying to catch material or mesh issues early.
Common Reasons to Convert FBX to GLB
- →Web 3D: loading assets in Three.js, Babylon.js, React Three Fiber, or any WebGL / WebGPU renderer
- →E-commerce: embedding interactive 3D product viewers on Shopify, WooCommerce, or custom storefronts using <model-viewer>
- →Game engines: importing into Unity (GLTF importer package) or Unreal Engine's built-in GLTF pipeline with PBR materials intact
- →AR / VR: GLB is the standard asset format for WebXR experiences, iOS AR Quick Look, and Meta Quest browser apps
- →AI 3D generation: SphereLinks exports all AI-generated models as GLB with full PBR textures — ready to drop into your project immediately
Frequently Asked Questions
How do I convert FBX to GLB?
Upload your .fbx file using the tool above, confirm the source format is set to FBX and the target is GLB, then click Convert. The file processes in your browser and you can download it immediately.
Does converting FBX to GLB preserve textures?
Yes. Converting to GLB preserves PBR materials and embedded textures from the source file.
Is this converter free?
Yes, completely free. No account, no usage limits, no hidden fees.
Are my files uploaded to a server?
No. All processing happens locally in your browser using WebGL. Your files never leave your device.