Note: Check your textures after using web converters, as materials occasionally revert to a basic unlit shader. Step 3: Setting Up Blendshapes and Expressions
Press N to open the sidebar menu on the right. Look for the tab.
Open Unity, go to Assets > Import Package > Custom Package , and select the downloaded UniVRM file. Import everything. Step 2: Import and Prepare the GLB Model Drag and drop your GLB file into the Unity Project window.
The model must be a humanoid biped with two arms, two legs, and a head. Quadruped or abstract models cannot use the standard VRM skeleton. 2. The T-Pose Standard Your GLB model must be exported in a standard . Feet should be flat on the ground. Arms must be perfectly horizontal along the X-axis. convert glb to vrm full
Drag your humanoid GLB model from the Project window into the Hierarchy scene view.
VRM requires:
Before exporting, ensure your model is in a and has all the bones mapped. Then, go to File > Export > VRM (.vrm) , give your file a name, and click "Export VRM" to finish converting your GLB to a high-quality VRM avatar. Note: Check your textures after using web converters,
Convert GLB to VRM Full: The Ultimate Guide to 3D Avatar Creation (2026)
Double-click the BlendShape avatar asset generated in your folder. Here, you map your model's facial shape keys (like blink, smile, and mouth movements for A, I, U, E, O) to standard VRM expressions.
A VRM file is useless without expressions. If your GLB file already contains shape keys (morph targets), you must link them to VRM expression presets in Unity. Open Unity, go to Assets > Import Package
:
The is a platform-independent, open file format for handling 3D humanoid avatars. Developed by the VRM Consortium, it is an extension of the glTF 2.0 standard, meaning it retains all the rendering power of GLB while adding several critical features necessary for avatars.
This is the industry standard used by VRChat avatar creators. Unity (free) with the UniVRM package is the only tool that reliably converts GLB to fully functional VRM with expressions and physics.
VRM requires a specific skeleton structure to animate correctly. Standard for skeletal mapping in VRM software. Author & License
| Body Part | VRM Required Bones | | :--- | :--- | | | Hips | | Spine | Spine, Chest, UpperChest (optional) | | Neck & Head | Neck, Head | | Left Arm | LeftShoulder, LeftUpperArm, LeftLowerArm, LeftHand | | Right Arm | RightShoulder, RightUpperArm, RightLowerArm, RightHand | | Left Leg | LeftUpperLeg, LeftLowerLeg, LeftFoot, LeftToes | | Right Leg | RightUpperLeg, RightLowerLeg, RightFoot, RightToes |