A9Converter can convert between DXF and DWG files. It reads AutoCAD R2.5, R2.6, R9, R10, R13, R14, 2000, 2002, 2004 and 2005. It writes AutoCAD R10, R13, R14, 2000, 2002, 2004 and 2005. It supports drag and drop from Windows Explorer to A9Converter's input file list.

The license of this software is Freeware, you can free download and free use this cad software.