Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.3DM
File Type
Rhino 3D Model
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .3dm file format
The 3DM file format is a file extension used by Rhinoceros 3D, a popular NURBS (Non-Uniform Rational B-Splines) modeling software. It is the native file format for Rhino and is used to store 3D models, including geometry, textures, and other related data. The 3DM format is designed to be a robust a…
File extension
.3DM
File type
Rhino 3D Model
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .3dm file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .3dm.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .3dm file?
File extension details and usage information
The 3DM file format is a file extension used by Rhinoceros 3D, a popular NURBS (Non-Uniform Rational B-Splines) modeling software. It is the native file format for Rhino and is used to store 3D models, including geometry, textures, and other related data. The 3DM format is designed to be a robust and accurate representation of 3D geometry, making it suitable for a wide range of applications, including industrial design, architecture, product design, and animation. It supports a variety of geometric primitives, such as points, curves, surfaces, and solids, as well as more complex geometric representations like meshes and NURBS surfaces. The 3DM format is also designed to be interoperable with other CAD/CAM/CAE software packages, allowing users to exchange 3D models between different applications. The format is widely used in various industries for creating and sharing 3D models, and it is often used as an intermediate format for converting between different CAD systems. The 3DM file format is a binary format, which means that it is not human-readable. It is designed to be efficient for storing and retrieving 3D model data.
Software Compatibility
Programs that may open or work with .3dm files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .3dm files be converted?
Options for saving or exporting this file to another format
In many cases, a .3dm file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .3dm file.
Why can't I open a .3dm file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .3dm format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .3dm files
To open a .3dm file, use software that supports this file format.
- Rhinoceros 3D
- Autodesk AutoCAD
- SolidWorks
- SketchUp (with plugin)
- FreeCAD
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .3dm file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.