Convert 3MF to glTF
Convert 3MF files to glTF in your browser. Free, no upload, no sign-up.
Convert 3MF files to glTF directly in your browser. The converter parses the 3MF mesh, rebuilds it in memory and writes it out as glTF, triangle for triangle. glTF can hold everything 3MF carries, so nothing is dropped on the way. The 3MF format also fixes its own axes and scale — Z-up, measured in millimetres — so the model is rotated and rescaled to land the way glTF tools expect it. Nothing is uploaded, there is no file size limit beyond your computer's memory, and the result downloads instantly. glTF gives you a readable JSON scene that is easy to inspect, diff or post-process in a build pipeline.
How to convert 3MF to glTF
- 1Drop your 3MF file
Drag a .3mf file onto the box above or click to choose one. Slicer project files (.3mf from Bambu Studio or PrusaSlicer) are supported; embedded print settings are ignored, geometry and colors are read.
- 2Check the preview
The model renders in 3D so you can confirm it loaded correctly. Dimensions, volume and triangle count are shown next to it; open edges are flagged if the mesh is not watertight.
- 3Download the glTF
Adjust the export options if needed and click download. Buffers are embedded in the JSON as base64, so the output is a single file.
What are 3MF files?
3MF is the modern replacement for STL, published by the 3MF Consortium (Microsoft, Autodesk, HP, Prusa and others). It is a ZIP archive containing XML that stores units, colors, materials, multiple objects and print settings. Slicers such as Bambu Studio and PrusaSlicer use it as their project format.
Commonly used by: Bambu Studio, PrusaSlicer, Cura, Windows 3D Builder, Fusion 360
Slicer project files (.3mf from Bambu Studio or PrusaSlicer) are supported; embedded print settings are ignored, geometry and colors are read.
What are glTF files?
glTF is the JSON form of the same Khronos standard as GLB. The .gltf file describes the scene as readable JSON; binary buffers and textures may be embedded as base64 or kept as separate files. It is convenient when you want to inspect or edit the scene description by hand.
Commonly used by: web developers, Babylon.js / three.js, Blender, Unity and Unreal importers
glTF gives you a readable JSON scene that is easy to inspect, diff or post-process in a build pipeline.
3MF vs glTF
| 3MF | glTF | |
|---|---|---|
| Full name | 3D Manufacturing Format | GL Transmission Format |
| Encoding | ZIP container | Text |
| Geometry type | Triangle mesh | Triangle mesh |
| Colors | Yes | Yes |
| Textures | Yes | Yes |
| Materials | Yes | Yes |
| Stores units | Yes | Yes |
| Multiple objects | Yes | Yes |
| Typical use | Bambu Studio, PrusaSlicer, Cura | web developers, Babylon.js / three.js, Blender |