Free Online 3DM to STL Converter

You can use our 3DM to STL conversion tool to quickly and easily convert your 3D model files for free. You may upload up to 20 files at one time, and our batch 3DM to STL converter will process each 3D model and present you with a download link for each file once completed.

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

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

Our 3D model 3DM to STL tool will load your 3DM file and, where supported, attempt to extract all the relevant 3D features, such as geometry, textures, and animations. To access the 3D conversion configuration options, click the button when you have selected your files. The current options support the ability to voxelize your 3D model and more.

How to Convert your 3DM to STL Online?

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

Upload your 3DM file

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

Download your STL

Click the download link to receive your STL file.

Frequently Asked Questions

How can I convert my 3DM file to STL?

First, click the "Upload..." button and select your 3DM file to upload. Your 3DM file will be uploaded to our servers. When the 3DM to STL conversion has completed, you can download your STL file right away.

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

We aim to process all 3DM to STL conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.

How accurate is the 3DM to STL conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.

File format information for 3DM and STL

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

The 3DM file format is a 3D Computer Aided Design (CAD) format primarily used by the Rhinoceros CAD software. It enables the storage of both simple and complex 3D models within a standard package and has found many uses within the architectural, engineering, and manufacturing arenas.

The format allows the storage of 3D model geometric data, including mesh and texture coordinate data. This 3D data is stored in the NURBS format, allowing complex objects to be represented with high precision.

Although primarily designed for use with the Rhinoceros CAD software, 3DM files enjoy support amongst other CAD software, with many supporting the import and export of data to the format.

3DM Converter Capabilities

Our 3DM 3D Model/Mesh tool does not support any color material data contained within 3DM files, so the converted file will not contain any color information.

ExtensionSTL
Full NameStandard Triangle Language
Type3D Model
Mime Typeapplication/vnd.ms-pki.stl
FormatText
Opens WithBlender, MeshLab, CAD Assistant, DAZ Studio

The STL, or Standard Triangle Language, file format has been around since the '80s and is supported by most modern 3D modeling applications. In particular, the STL format has become something of a standard format within the area of 3D printing, despite the rise of more modern formats such as 3MF.

STL files come in two flavors: binary or text format. The text format is human-readable, making it easy to perform manual edits, but can lead to very large file sizes. As you can imagine, the binary format is much more compact and represents the majority of the STL files you are likely to encounter.

The format itself is very simple; the 3D model is represented by a sequential list of triangles, with each triangle defined with 3 points consisting of their X, Y, and Z positions, along with an additional vector that contains the face normal (the direction the face is pointing). There is an additional attribute block for each triangle; however, this is largely unused and thus unsupported.

STL Converter Capabilities

Our 3D conversion tool does not support color or material information in STL files, so your file will not contain any color information.

Information for converting from 3DM to STL

Your 3DM file will be converted to a STL file using our unified 3D model and mesh conversion tool. Our 3DM 3D tool performs accurate conversions of 3D elements such as vertices, faces, normals, and relevant material information. Our tool will not attempt to transfer any color information if it is present in your 3DM file; your final 3D model will contain only geometry data.

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