FreeCAD drawings (.fcstd) can be exported by the program to all kinds of other 3D data, including IGES format (.igs, .iges). We do not know about any program that can perform this CAD conversion as .fcstd files seems to be exclusive to FreeCAD.
Convert FreeCAD drawing to IGES 3D exchange format.
We have found one software suitable in our database for this conversion.
Multiplatform software - convert fcstd to igs on any platform
FreeCAD is open source multiplatform 3D CAD/MCAD/CAx/CAE/PLM modeler used to design mechanical engineering projects.
Convert from fcstd file
to igs file
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.