How to convert STL to IGS
- Add your .STL 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
- IGS is the same format as IGES; only the extension differs.
- The mesh becomes faceted surfaces, not smooth reconstructed CAD geometry.
- No parameters or design history transfer; STL has none to carry, and units should be checked after conversion.
Frequently asked questions
What is the difference between an IGS and an IGES file here?
None in content.
.igs and .iges are the same IGES CAD exchange format under different extensions, so the conversion produces the same neutral geometry either way.Does STL to IGS recreate smooth surfaces?
No. The STL mesh is made of flat triangles, so the IGS holds those facets as small surfaces rather than the smooth surfaces a native CAD part would define.
Why convert STL to IGS?
IGS/IGES is a vendor-neutral format for moving geometry between CAD programs, so it is useful when a mesh needs to be read by CAD software that expects IGES.
Will there be a parametric feature tree?
No. STL has no design history or parameters, so the IGS contains geometry only, without editable features.
Programs that convert STL: SolidWorks · CATIA · 3D Object Converter · ACE 3000 · TurboCAD · 3ds Max (3D Studio Max) · Alibre Design Professional · Autoconverter
