DWG ("Drawing") is AutoCAD's file format, while the Drawing Exchange Format (DFX) replicates DWG data in non-Autodesk platforms. Compatibility issues and product evolution have led to the point that a good third-party conversion utility is almost mandatory for those who still use DFX. AnyDWG Software's DWG DFX Converter can convert DWG files to DFX and vice versa, singly or in batches, without having to use AutoCAD or other expensive engineering tools.
This compact utility opens with a plain dialog for browsing, adding, and converting files. You can select the output file type, version, and directory, and that's about it, an extremely simple and efficient layout that nonengineers should have no trouble grasping, even without its clear directions or its searchable Windows-style Help file. We had to go online to find a DFX file to convert, and this is certainly a need-driven tool, but it does its highly focused job very well indeed. We especially commend its ability to save files in any one of the many versions of either supported format. DWG's been around since the 1970s and is still going strong, and DFX has been in use since 1982, so there have been many revisions, yet this tool can access them all.
The full-featured trial version of Any DWG DXF Converter is limited to 15 uses. It works in all versions of Windows from 95 to 7. If you rely on DFX files for accurate DWG representations, or if you need to access archived engineering data, DFX Converter might be your tool.
From AnyDWG Software:
Any DWG DXF Converter is a batch DWG to DXF, DXF to DWG converter that allows you to convert DWG to DXF, and DXF to DWG without the need of AutoCAD. It is also an AutoCAD drawing file version converter, it allows you to choose the AutoCAD version of the output DWG and DXF file.