DORCHESTER3D

Free Online 3DM to STL Converter

Here is our free to use 3DM to STL 3D model converter tool that will take your 3DM file and convert it to the STL format ready for loading into your favourite 3D modeling package. Our 3D model converter supports batch processing of your files and can convert up to 20 3DM files at one time.

Drag and drop your files here to upload or click the button above.
A maximum of 20 files can be converted at once.

Please note: Your 3DM file file, when uploaded to our server, will be deleted 15 minutes after upload. Please download your converted 3DM file file before this time.

The 3DM to STL model conversion tool will analyse your 3DM file and convert its 3D mesh data including vertices, surfaces and where applicable vector normals and texture coordinates to the STL format whilst maintaining the structural accuracy of your original 3DM 3D model file.

File information for 3DM and STL

Full NameRhinoceros 3D
Extension3DM
Type3D Model
Mime Typex-world/x-3dmf
FormatBinary

The 3DM file format is an advanced 3D graphics format based around the NURBS method of representing 3D data. 3DM files are the native format used by the Rhinoceros 3D CAD application.

The advantages of using 3DM files to store 3D data are primarily down to the mathematically superior NURBS method compared to other 3D formats that store 3D objects as a series of triangles, which is how formats such as STL store 3D data.

3DM Converter Capabilities

As the 3DM format currently does not support the use of material colors when used by tool, your converted model will contain only the mesh geometry, material colors will not be transferred to your converted file.

Full NameStandard Triangle Language
ExtensionSTL
Type3D Model
Mime Typeapplication/vnd.ms-pki.stl
FormatText

The STL file format is used for storing 3D models and is a common format for distributing 3D printable models. STL files emerged in the 1980s as a format for storing a 3D mesh as a simple list of triangles. Due to its age and simplistic format, it has gained widespread support within 3D modeling and CAD applications.

As a result of the simple file format and its widespread support amongst 3D editors, the STL format has found itself as the format of choice for the distribution of 3D printable objects. There are many websites that offer 3D printing downloads in the STL format.

Mesh Geometry

As mentioned, STL files make use of a simple structure for containing the 3D mesh data. The 3D model is stored as a continuous list of triangles, with each triangle containing three vertices specifying the location in 3D space of the triangle, which, along with a single vector normal, is all that is required to render the model contained within the STL file. There are two formats of STL files: plain text and binary. When used with large and complex 3D models, the text format leads to very large file sizes and should be avoided, with the binary format offering more efficient storage of the mesh data.

STL Converter Capabilities

As the STL format currently does not support the use of material colors in 3D models when created using our tool, your converted model will contain only the mesh geometry, material colors will not be transferred to your converted STL file.

How to Convert your 3DM to STL?

Here are two steps to convert your 3DM to STL using our free 3DM converter tool.

Upload your 3DM file

Click the "Select File" button, and then select the 3DM file to upload. The maximum file size is 100MB.

Download your STL

Click the download link to receive your STL file.

Frequently Asked Questions

How do I convert my 3DM to STL?

First, click the "Select File" button and choose your 3DM file. We will upload and convert your 3DM file. Once the conversion from 3DM to STL completes, use the provided link to download your STL file.

How long does it take to convert my 3DM file to STL?

We aim to process all 3DM to STL file conversions as soon as possible; this should take around 5 seconds; however, this may be longer for larger files.

Is the 3DM format suitable for 3D printing?

No. Most 3D printing slicer software will not support the 3DM format. It is recommended to convert your 3DM file to the STL format if you wish to 3D print it.

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