How do you turn a .dwf file into a .dwg file?

For Microstation users

• You can use the saveas to get DWG/DXF from DGN
• You can also use the "File --> export --> DGN, DWG, DXF" to get DXF files

For AutoCAD users

• Command: DGNIMPORT
• Available in AutoCAD versions:

• AutoCAD MAP
• AutoCAD 2006~2010
• AutoCAD LT 2008~2010

For other AutoCAD users and non-AutoCAD users
Get a plugin or look for stand alone converters to convert DGN to DXF.