Convert AMF to OBJ
Convert AMF files to OBJ in your browser. Free, no upload, no sign-up.
Convert AMF files to OBJ directly in your browser. The converter parses the AMF mesh, rebuilds it in memory and writes it out as OBJ, triangle for triangle. OBJ records shape and nothing else, so the colors and the unit definition in the AMF file do not come across. The AMF format also fixes its own axes and scale — Z-up, measured in millimetres — so the model is rotated and rescaled to land the way OBJ tools expect it. Nothing is uploaded, there is no file size limit beyond your computer's memory, and the result downloads instantly. OBJ keeps groups and UV coordinates and opens in every modelling tool, which makes it a good format for editing or texturing a model.
How to convert AMF to OBJ
- 1Drop your AMF file
Drag a .amf file onto the box above or click to choose one. Plain and ZIP-compressed AMF files are read; curved-triangle data is flattened.
- 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 OBJ
Adjust the export options if needed and click download. A .mtl material file is not generated; the exported OBJ contains geometry, normals and UVs only.
What are AMF files?
AMF is an XML format standardised as ISO/ASTM 52915 as an intended successor to STL. It supports units, colors, materials and curved triangles. Adoption stayed limited and most of the industry moved on to 3MF, but slicers still accept AMF files.
Commonly used by: older slicers, ASTM / ISO 52915 workflows
Plain and ZIP-compressed AMF files are read; curved-triangle data is flattened.
What are OBJ files?
OBJ is a plain-text mesh format from Wavefront. It stores vertices, normals, UV texture coordinates and face definitions, and references materials through a companion .mtl file. It is human-readable and supported by virtually every 3D modelling application.
Commonly used by: Blender, Maya, ZBrush, game engines, photogrammetry tools
OBJ keeps groups and UV coordinates and opens in every modelling tool, which makes it a good format for editing or texturing a model.
AMF vs OBJ
| AMF | OBJ | |
|---|---|---|
| Full name | Additive Manufacturing File | Wavefront OBJ |
| Encoding | Text | Text |
| Geometry type | Triangle mesh | Triangle mesh |
| Colors | Yes | No |
| Textures | No | Yes |
| Materials | Yes | Yes |
| Stores units | Yes | No |
| Multiple objects | Yes | Yes |
| Typical use | older slicers, ASTM / ISO 52915 workflows | Blender, Maya, ZBrush |