CAD Version Converter, besides changing a version of AutoCad drawings, converts DWG to DXF files and back without having AutoCAD installed on your PC.
CAD Version Converter allows you to convert AutoCAD drawing files (DWG and DXF) between different versions without the need of AutoCAD. Supported versions range from AutoCAD R2.5 to AutoCAD 2005. You may convert your old drawing files of lower version to higher version, or convert your drawing files of higher version to lower version to solve compatibility issue. Batch conversion feature is available. CAD Version Converter is freeware!