3DM to STL Converter

Batch convert 3dm files to stl format online for free

Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.

How to convert 3DM files to STL online?

Step-by-step guide to convert 3dm to stl using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).

Upload 3DM-file

Drag and drop your 3DM file into the upload area. The maximum file size is 100 MB.

3DM to STL

Click "Convert" to change 3dm to stl. The conversion usually takes a few seconds.

Download your STL

Now you can download the STL file. The download link only works on your device.


  • ❓ How can I convert files from 3DM to STL?
    First you need to add file for conversion: drag and drop your 3DM file or click the "Choose File" button. Then click the "Convert" button. When 3DM to STL conversion is completed, you can download your STL file.
  • ⏱️ How long does it take to convert 3DM to STL?
    Mesh conversion is pretty fast. You can change 3DM to STL in a few seconds.
  • 🛡️ Is it safe to convert 3DM to STL on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including 3DM to STL) is absolutely safe.
  • 💻 Can I convert 3DM to STL on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our 3DM to STL converter works online and does not require software installation.

Information about 3DM and STL file formats

🔸 File format 3DM STL
🔸 Full name Rhino 3D Model Stereolithography File Format
🔸 File extension .3dm .stl
🔸 MIME type x-world/x-3dmf model/stl, model/x.stl-ascii, model/x.stl-binary
🔸 Developed by Robert McNeel & Associates 3D Systems
🔸 Type of format
🔸 Description The Rhinoceros file format (.3DM) is useful for the exchange of NURBS geometry. The Rhino developers started the openNURBS Initiative to provide computer graphics software developers with the tools to accurately transfer 3-D geometry between applications. An open-source toolkit, openNURBS includes the 3DM file format specification, documentation, C++ source code libraries, and .NET 2.0 assemblies to read and write the file format on supported platforms (Windows, Windows x64, Mac, and Linux). STL is a file format native to the stereolithography CAD software created by 3D Systems. Many other software packages support this file format. It is widely used for rapid prototyping, 3D printing, and computer-aided manufacturing. STL files describe only the surface geometry of a three-dimensional object without representing color, texture, or other common CAD model attributes. The STL format specifies both ASCII and binary representations. Binary files are more common since they are more compact.
🔸 Technical details An STL file describes a raw, unstructured triangulated surface by the unit normal and vertices (ordered by the right-hand rule) of the triangles using a three-dimensional Cartesian coordinate system. All STL coordinates were required to be positive numbers in the original specification, but this restriction is no longer enforced, and negative coordinates are commonly encountered in STL files today. As a result, STL files contain no scale information, and the units are arbitrary.
🔸 File conversion 3DM conversion STL conversion
🔸 Associated programs Autodesk Inventor Fusion, McNeel Rhino TurboCAD, GOM Inspect, STL Viewer, Geomagic Explorer, Parametric Technology Creo, Dassault Systemes CATIA, KeyCreator, MeshLab, SolidWorks, Pro/Engineer, CloudCompare, Blender, AutoCAD, 3D Studio Max, Autodesk Inventor, Mechanical Desktop
🔸 Wiki https://en.wikipedia.org/wiki/Rhinoceros_3D https://en.wikipedia.org/wiki/STL_(file_format)