Fbx extension is related to Autodesk FBX Interchange File. You can try to open fbx files with Autodesk Maya.
Autodesk company generally produce 3d softwares. Fbx files can be opened by some products of this firm. You have chance to open fbx files by using Autodesk Maya or 3dsmax(plugin may be required).
It is possible to convert fbx files to .obj .dxf .3ds and collada file type. Maya 3d software can open all these type of files. To get detailed information, please check the following link.
FBX files commonly used in computer games and mobile games as 3D models or game environments.
What to use fbx
Autodesk Maya or Game Softwares like Unity
which page related to fbx file
fbx Related Searches
You can check related links about fbx fileextension.