File Extension 3DM

  • Full name
    3DML Data Format
  • Developer
    Robert McNeel & Associates
  • Popularity
Have you encountered a problem with a 3DM file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a 3DM file here. In the further part of this page we have added a list of programs that should open your 3DM file. It is enough you choose a proper application for your operating system, download and install it.


3DM is a format for 3-dimensional data described by so-called NURBS. These Non-Uniform Rational B-Splines let you create all kinds and shapes of 3-dimensional objects in a 3D editor. But 3DM files can include Surfaces, Meshes and Solids.

The 3DM format was created by the openNURBS Initiative, founded by Robert McNeel & Associates. McNeel is the company behind Rhino 3D, a NURBS Modeller program used in many different design areas. The 3DM format is therefore often referred to as Rhino 3D format.

The openNurbs Initiative offers free programming libraries so that any 3D software manufacturer can implement the 3DM format. The 3DM format should be a universal data exchange format for 3D data. So far, however, most of the 3D applications can only be equipped with a paid (Sycode 3dm, Rhino.Io) plugin to read and write 3DM files.

Alternatively, you can also use a converter like Okino PolyTrans. Since there are now 4 versions of 3DM (through the advancement), the success of an import by a plugin is never 100% guaranteed.

Programs which can open a 3DM file

How to open a 3DM file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the 3DM file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a 3DM file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support 3DM files. At this point we are looking for disk space where the application was installed in and we can link it with a 3DM file. Since then, our operating system will use the selected program to support all 3DM files.

Other issues

Despite the described problem with 3DM there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the 3DM file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the 3DM file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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