How to convert STL to IGES
- Add your .STL file - drop it in the box above or click to browse.
- Convert it to .IGES in a few seconds.
- Download your new .IGES file.
What to expect
- Triangles become many small faceted surfaces, not smooth reconstructed CAD surfaces.
- Curved geometry stays faceted because the source mesh held no true curvature.
- STL carries no units, so verify scale after importing the IGES.
Frequently asked questions
Does STL to IGES produce smooth CAD surfaces?
No. STL describes the shape only as flat triangles, so the IGES result represents those facets as many small surfaces rather than the smooth analytic surfaces of a native CAD model.
Why convert STL to IGES?
IGES is a vendor-neutral CAD exchange format, so this helps move mesh geometry toward CAD programs that read IGES rather than mesh formats.
Will curved parts look smooth?
No. Curves in the original remain faceted because the STL only stored triangles; the conversion cannot reconstruct true curvature that was lost when the mesh was created.
Are units or scale carried over?
STL stores no units, so the numeric coordinates transfer as-is and the intended scale should be confirmed in the receiving CAD tool.
Programs that convert STL: SolidWorks · 3D Object Converter · ACE 3000 · Creo Parametric · 3ds Max (3D Studio Max) · Alibre Design Professional · Autoconverter · PolyTrans|CAD+DCC
