Convert Your 3D Mesh/Model 3DM Files to 3MF

Our free and fast tool will convert most 3D mesh or 3DM (Rhinoceros 3D) model files to a standard 3MF (3D Manufacturing Format) file that can then be edited further in most popular 3D editing packages such as Blender or 3D printed without any further processing. Our conversion tool can also batch convert multiple 3DM files; up to 25 files at a time can be converted.

To convert your 3DM file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a 3MF file and will be ready for download shortly afterwards. For more information about the 3DM to 3MF conversion process, see the conversion information section below.

How to Convert your 3DM to 3MF Online?

Here are two simple steps to convert your 3DM to 3MF.

Upload a 3DM

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

Download your 3MF

Click the download link once completed to receive your 3MF file.

Frequently Asked Questions

How can I convert my 3DM file to 3MF?

First click the "Upload..." button, select your 3DM file to upload. Select any configuration options. When the 3DM to 3MF conversion has completed, you can download your 3MF file straight away.

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

We aim to process all 3DM to 3MF conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.

How accurate is the 3DM to 3MF conversion?

We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.

Is it safe to convert my 3DM to 3MF on ImageToStl.com?

Yes, of course! We do not store the 3DM file you submit to us. The resulting 3MF file, once created is deleted 15 minutes after upload and the download link will expire after this time.

Can I convert 3DM to 3MF on Windows, Linux, Android, iOS or Mac OS?

Yes! Our 3DM to 3MF tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.

What if I am using an Ad Blocker, will that affect things?

Yes. Although you can use an Ad Blocker, if you like our 3DM conversion tool please consider white-listing our site. When an Ad Blocker is enabled there are some conversion limits on some of our tools and processing/conversion times will be longer.

I have several 3DM files; can I batch convert my 3DM to 3MF?

Yes! Our 3DM tool supports full batch conversions. You can upload up to 25 and 3DM files at a time. Our tool will convert them all as quickly as possible. Once completed, you can either download the 3MF files individually or download them all in a single ZIP file.

Comparing 3DM and 3MF Features

3DM Features

Mesh Geometry (Vertices and Faces)
Vertex Normals
Face Normals
Vertex Colors
Face Materials (Excluding textures)
Textures
Point Cloud
Multiple Objects Per File
Object Transforms (Translation, Rotation, and Scale)
Bones/Joints
Animations
Suitable for 3D Printing

3MF Features

Mesh Geometry (Vertices and Faces)
Vertex Normals
Face Normals
Vertex Colors
Face Materials (Excluding textures)
Textures
Point Cloud
Multiple Objects Per File
Object Transforms (Translation, Rotation, and Scale)
Bones/Joints
Animations
Suitable for 3D Printing

File Format Information for 3DM to 3MF

Extension	3DM
Full Name	Rhinoceros 3D
Type	3D Model
Mime Type	x-world/x-3dmf
Format	Binary
Tools	3DM Converters, 3D Model Voxelizer, Create 3DM Animation, 3DM Asset Extractor, 3DM Viewer

Description

The 3DM format, also known as Rhino3D or Rhinoceros 3D, is a 3D graphics model file format developed and used in CAD applications, industrial design, and 3D printing. The format has some compatibility with Adobe Illustrator and can be exported as an AI file using vector graphics.

Although it is a 3D file format, it stores data in the NURBS geometry format, which allows for greater mathematical precision compared to triangle or polygon-based mesh geometry formats such as STL. Along with support for converting between other CAD formats, the 3DM format can also support two different scripting languages.

3DM Notes

If your 3DM file contains textures, these will be ignored. If a material contains color information, this will be translated where possible.

Supported Features

Mesh geometry
Mesh material colors

Unsupported Features

Textures
Animations

Extension	3MF
Full Name	3D Manufacturing Format
Type	3D Model
Mime Type	application/vnd.ms-package.3dmanufacturing-3dmodel+xml
Format	Binary
Tools	3MF Converters, 3D Model Voxelizer, Create 3MF Animation, Compress 3MF, 3MF Asset Extractor, Text to 3MF, 3MF Viewer

Description

3MF files are a modern 3D file format designed specifically for use with 3D printable models (additive manufacturing). It was designed to be the successor to the popular legacy STL format (also a common format in 3D printing) to overcome the limitations of that format.

The format of 3MF files is XML-based and compressed with standard Zip file compression, resulting in small, easily transferable files. The format supports 3D meshes along with associated materials and textures, all contained within the Zip file.

3MF Notes

3MF files support material and color information. If your uploaded model contains color information, our tool will attempt to save this in the 3MF file at the end of the conversion process. Textures are supported and will be included in the final 3MF file.

Supported Features

Mesh geometry
Face and vertex colors
Textures

Converting Your 3DM File for 3D Printing

Software used to prepare a 3D model file for printing, which is also known as 3D slicer software, cannot usually open 3DM files. This is because slicer software authors will support the most common formats used for 3D printing, such as STL and 3MF and do not have the resources to implement 3D object parsers for all the possible 3D formats that are out there.

A retro-themed laptop initial design

The retro-themed laptop saved to the 3MF format

The fully-assembled 3D printed laptop

Slicer software can, however, handle files formatted to the 3MF standard. This is because the 3MF format was specifically designed as a medium of storage and exchange for 3D printable models. Our 3DM to 3MF conversion tool can convert your 3DM file into a 3MF file suitable for loading into most 3D slicer software. As 3MF files support material colors and textures, our converter will convert these if present, resulting in a single 3MF file suitable for use with most 3D slicer software.

How does it work?

Converting from the 3DM file format to 3MF can be a complex process, and any tool used for this conversion process needs to be able to handle a variety of data conversion tasks as well as identify any defects within the 3D model and fix them. Here we will explain the conversion process used by our tool to accurately convert your 3DM file to a valid 3MF 3D model. Let's start with the conversion process, which involves the following steps:

Step 1: Read the Source 3DM File

In its simplest form, an 3DM file is a binary data file containing 3D data such as vertices, faces, normals, and more. When combined, these make up the 3D model you see on your screen.

For more information regarding the 3DM file format, please see this great article that goes into a lot of detail explaining the 3DM format.

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Step 2: Process File Data

With the 3DM file data read, our tool generates an internal representation of the full 3D model and will attempt to fix any geometry issues encountered. Along with repairing any issues with the 3D model, the tool will remove any duplicated vertices and prepare the model for exporting to the 3MF format.

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Step 3: Saving to the 3MF Format

The 3MF file format is relatively new and its primary aim is to become the standard for storing and distributing 3D models for 3D printing applications. Most modern 3D printing software can open 3MF files.

Our tool will now take the in-memory 3D model we have created in step 2 and convert this to the 3MF format ensuring it is compatible with any 3D printing software that supports 3MF.