How to convert OBJ to IGS
- Add your .OBJ file - drop it in the box above or click to browse.
- Convert it to .IGS in a few seconds.
- Download your new .IGS file.
What to expect
- Each mesh triangle becomes a flat surface; IGS does not reconstruct smooth surfaces from a mesh.
- Textures and materials are not preserved - the output is geometry only.
- Dense meshes create large IGS files with many surface entities that can be slow to open.
Frequently asked questions
Does OBJ to IGS keep smooth surfaces?
No. IGS (IGES) centers on surfaces and wireframe, but OBJ is a triangle mesh, so each facet becomes a small flat surface and curved forms stay faceted rather than smooth.
Why convert OBJ to IGS?
IGS is the common spelling of the neutral IGES CAD format, so converting lets mesh geometry be opened and exchanged across the many CAD programs that support it.
What can open an IGS file?
IGS files open in FreeCAD, CAD Assistant and the Autodesk Viewer and move geometry between different CAD systems.
What does not carry over?
Texture, material and color data from the OBJ is not represented in IGS, and the result is a faceted surface set rather than a true solid; 3D printing still requires converting to STL.
Programs that convert OBJ: SolidWorks · 3D Object Converter · CrossManager · 3ds Max (3D Studio Max) · Alibre Design Professional · Autoconverter · PolyTrans|CAD+DCC · TransMagic
