With the Export option, available in the dropdown found in the Main Menu, you can export your model as another file type.

The following export options are available:

• 3DS
• Collada
• DWG (3D or 2D)
• DXF (3D or 2D)
• FBX
• KMZ
• OBJ
• VRML
• XSI

Each option will require you to choose a few options. For more information on each of these, see the Using SketchUp Data with Other Programs or Tools.