We have found 19 software records in our database eligible for .igs to .dwg file format conversion.
Almost any decent CAD/3D modeling tool nowadays supports both IGES (.igs, .iges) and AutoCAD DWG formats (.dwg) .
As such, it should be pretty easy to find a program capable of this conversion. Some programs known to support this CAD conversion are listed below.
However, several variants of DWG format exist, so always make sure you export to the version you need, which is usually the latest unless you need to open the .dwg file in some older program.
IGS
An igs file extension can be found as 3D graphics data saved in International Graphics Exchange Standard (IGES) format used for data exchange.
DWG
A dwg file extension is used for standard CAD file format, originally used by AutoCAD. A DWG is a proprietary format and can only be created in AutoCAD. Other CAD programs can usually import it but not create its proprietary form. Because of this, DWGs are often exported to DXF interchange format so that they can be seamlessly used in other CAD programs.