Opening 3DM files

Did your computer fail to open a 3DM file? We explain what 3DM files are and recommend software that we know can open or convert your 3DM files.

What is a 3DM file?

The .3dm file extension is used for a 3D graphics file format that was developed by the openNURBS Initiative. These 3DM files are also classified as CAD (computer aided design) files. Also called 3D NURBS CAD files, these .3dm files can be generated by various CAD applications.

These 3DM files contain 3D graphics and other CAD-related objects. These .3dm files may also contain metadata details and formatting attributes. These may have been entered by the author of these 3DM files in the CAD program that was used to create the 3DM file.

The Rhino 3D software can be used to open and access the content of these .3dm files. This software was designed by Robert McNeel & Associates for Microsoft Windows PCs. This is a CAD application.

Try a universal file viewer

In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.

By Prof. Jones (The File Expert)

Chief Content Editor and File Expert

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