IGES/IGS is a common ASCII CAD format and most of the modern CAD programs support it and can export their CAD drawings to it. In case of DWG it should be very easy, considering DWG is de facto standard in CAD industry and it can be imported/opened in almost any CAD software.
Convert AutoCAD drawing to IGES 3D exchange format.
We found 17 software records in the database related to .dwg to .igs file format conversion.
Microsoft Windows software - convert dwg to igs on Windows
A 2D and 3D CAD construction software
Convert from dwg file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned dwg to igs. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Leading 2D and 3D CAD development software from Autodesk
A CAD and Gerber conversion software
A 3D modelling software
A CAD converter with huge format support
A 3D modelling application
A dedicated 2D/3D CAD software
A family of 2D/3D CAD software products for Windows
Apple macOS / Mac OS X software - convert dwg to igs on OS X
Mac version of popular Autodesk AutoCAD software
Multiplatform software - convert dwg to igs on any platform
3D CAD/CAM tool for product development