3DM to GLB Converter
Drop a .3dm file below and get a .glb back. The conversion happens inside this page using WebAssembly, so nothing is uploaded to a server and there is no queue to wait in.
- Private by designFiles stay on your device.
- No queueConversion starts instantly.
- No sign upNo account, no limits per day.
Compatibility
What survives the trip from 3DM to GLB.
| Feature | 3DM | GLB | Result |
|---|---|---|---|
| Geometry | Supported | Supported | Supported |
| Vertex colors | Supported | Supported | Supported |
| Materials | Partial | Supported | Partial |
| Textures | Not supported | Supported | Not supported |
| Scene hierarchy | Supported | Supported | Supported |
| Animation | Not supported | Supported | Not supported |
How to convert 3DM to GLB
- 1Add your 3DM fileDrop the .3dm file into the box, or pick it from disk. Multiple files are converted one after another.
- 2Pick GLB as the outputGLB is already selected on this page. Adjust scale, up axis or triangle budget if the target application is picky.
- 3Download the resultThe .glb file is written locally and appears as a download button next to your file.
About 3DM
3DM is the openNURBS based native format of Rhino. It stores NURBS surfaces, meshes, layers, blocks and object attributes, and the openNURBS toolkit makes it one of the few native CAD formats that is genuinely readable outside its host application.
- Rhino
- Grasshopper
- Revit via plug-in
- Blender via add-on
About GLB
GLB packs an entire glTF 2.0 scene, including textures and animation clips, into one binary file. It is the format of choice for the web, AR and real time engines because it loads fast and needs no external assets.
- three.js
- Babylon.js
- Unity
- Unreal Engine
- Blender
Questions
Is this 3DM to GLB converter free?
Yes. There is no account, no daily quota and no watermark. The tool is a static web page and the work is done by your own CPU, so there are no server costs to pass on.
Are my files uploaded anywhere?
No. MeshFormat loads a WebAssembly build of the geometry kernels into your browser and reads the file locally. You can open the network tab and confirm that nothing leaves the page, or disconnect after the page has loaded and keep converting.
How large can a 3DM file be?
The practical limit is your available memory rather than an arbitrary cap. Models up to a few hundred megabytes work on a normal laptop; very dense scans convert faster if you lower the triangle budget in the options.
Which programs open GLB files?
three.js, Babylon.js, Unity, Unreal Engine and most other tools that work with 3D meshes read .glb directly.