Phase 1: Import and Convert
Phase 2: Set Up the VRM Meta Data
Phase 3: Export
Result: A fully functional VRM file with proper eye tracking and humanoid animation.
| Tool | Ease of Use | Quality | Best For | |------|-------------|---------|----------| | VRoid Studio (import GLB as custom model) | ⭐⭐ | ⭐⭐⭐⭐ | Making VRM from scratch, not direct conversion | | Blender + VRM Add-on | ⭐⭐ | ⭐⭐⭐⭐⭐ | Full control, fixing rigging issues | | Three-VRM Converter (online) | ⭐⭐⭐⭐ | ⭐⭐ | Quick tests, but often fails on complex GLBs | | Unity + UniVRM | ⭐⭐ | ⭐⭐⭐⭐⭐ | Professional pipeline, perfect results | convert glb to vrm
If you’d like, I can:
Converting a (glTF Binary) file to is a common task for VTubers and social VR users who want to use custom 3D models in platforms like VRChat or Luppet. Since VRM is based on the glTF standard, the conversion is relatively straightforward but requires specific tools to add "humanoid" avatar data. Here are the two best ways to handle the conversion: Option 1: Using the VRM Add-on for Blender (Easiest)
This method is ideal if you want to stay within one program and avoid setting up a Unity project. Install the Add-on : Download and install the VRM Add-on for Blender . It supports Blender versions 2.93 through 5.1. Import your GLB File > Import > glTF 2.0 (.glb/.gltf) and select your model. Prepare the Model
: Ensure your model is rigged with a humanoid armature. Use the VRM panel in the sidebar (press ) to map your bones to the VRM humanoid standard. File > Export > VRM (.vrm) Phase 1: Import and Convert
. Fill in the metadata (title, author, license) in the export dialog and click Option 2: Using Unity & UniVRM (Professional/Advanced)
This is the standard industry workflow and provides the most control over "spring bones" (hair/clothing physics) and facial expressions. Setup Unity : Create a new Unity project and import the UniVRM package Import Model : Drag your GLB file into the Unity Assets folder. Set as Humanoid : Select the imported model, go to the tab in the Inspector, change "Animation Type" to , and click Configure VRM
: Drag the model into your Scene. Select it and go to the top menu: VRM0 > Export to VRM Final Polish : You may need to re-import the resulting VRM to adjust VRM-specific settings
like the First Person view position or BlendShape (expression) proxies. Quick Tips for a Clean Conversion Phase 2: Set Up the VRM Meta Data
: If your textures are missing after export, ensure they are "embedded" in the original GLB or properly mapped in your project folder before exporting. Bone Naming : VRM requires a specific hierarchy. If using Blender, the VRM Add-on can often auto-detect and map these for you.
: Always check your model scale (1 unit = 1 meter) before exporting to avoid your avatar being giant or tiny in-game. Which platform are you planning to use your VRM model on?
Knowing the destination can help determine which physics settings you'll need.
If your GLB is rigged but has an unnatural pose, or if you want to add facial blend shapes, Blender is your best friend. You will use two free add-ons: Better GLTF Importer/Exporter (built into Blender 3.0+) and VRM Add-on for Blender (by sator-imaging).
