The ASCII-based OBJ format makes it possible to exchange graphical data between many applications. Both polygons and freeform geometries such as curves are supported with this format. You can export 3ds Max files to this format.
To export scene geometry to an OBJ file:
The Select File To Export dialog opens.
The exporter dialog opens.
During export, a dialog showing progress and the names of exported objects opens. When the export is finished, click DONE to return to 3ds Max.