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

Our free and fast tool will convert most 3D mesh or 3MF (3D Manufacturing Format) model files to a standard OBJ (Wavefront) 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 3MF files, up to 25 files at a time can be converted.

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

How to Convert your 3MF to OBJ Online?

Here are 2 simple steps to convert your 3MF to OBJ.

Upload a 3MF

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

Download your OBJ

Click the download link once completed to receive your OBJ file.

Frequently Asked Questions

How can I convert my 3MF file to OBJ?

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

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

We aim to process all 3MF to OBJ 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 3MF to OBJ 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 3MF to OBJ on ImageToStl.com?

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

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

Yes! Our 3MF to OBJ 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 3MF 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.

Will the OBJ file retain the textures from my 3MF file?

Yes! If your 3MF file contains textured geometry, the texture image files along with the texture coordinates (UV data) will be exported with the final OBJ file.

I have several 3MF files, can I batch convert my 3MF to OBJ?

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

How does it work?

Converting from the 3MF file format to OBJ 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 3MF file to a valid OBJ 3D model suitable for 3D printing. Lets start with the conversion process, which involves the following steps:

Step 1: Read the Source 3MF File

A 3MF file is a collection of 3D model data files including mesh and texture data compressed into a single file aimed at the 3D printing arena. The file is basically a ZIP file containing the relevant 3D files with the 3MF extension. The internal mesh structure is stored within various XML files making this easy to read in using a standard XML parser.

Our tool can read the compressed 3MF file and parse the 3D model contents taking into account all vertex, face and material information. As the 3MF format supports nested models within the 3D scene our tool will check for these and perform any world space transforms that are needed.

When our tool reads in this 3D data all we are interested in are the vertices, faces, normals, materials and textures as this is the only data that can be accurately converted into the final OBJ file.

The 3MF file can contain data such as material definitions and textures that describe how a particular set of 3D geometry should be rendered. As we are creating an OBJ file, which supports both materials and textures, our tool will attempt to load any materials and textures present in the 3MF file.

Step 2: Process File Data

With the 3MF 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 ready for exporting to the OBJ format.

Step 3: Saving to the OBJ Format

The OBJ format has been around for many years and has become a standard format for 3D modelling. Most 3D modelling software can open OBJ files which means our tool now needs to take the in-memory 3D model we have created in step 2 and convert this to the OBJ format.

Along with the completed OBJ file, a separate MTL file will also be created along with any textures that were present in the original 3MF file.

File format information for 3MF to OBJ

Extension3MF
Full Name3D Manufacturing Format
Type3D Model
Mime Typeapplication/vnd.ms-package.3dmanufacturing-3dmodel+xml
FormatBinary
Tools3MF Converters, 3D Model Voxelizer, Create 3MF Animation, Compress 3MF, 3MF Asset Extractor, Text to 3MF, View 3MF

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 that are compressed with the 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

If your 3MF file contains textures, these will be included in the conversion process. If a material contains color information this will be translated where possible.

Supported Features

  • Mesh geometry
  • Face and vertex colors
  • Textures

Description

The OBJ file format originally created by Wavefront Technologies and later adopted by many other 3D software vendors is a simple text-based file format for describing 3D model/geometry. This data can include Vertices, Faces, Normals, Texture Coordinates and references to external Texture files.

As the format is text-based it is relatively straight-forward to parse by 3D modelling applications. A downside of the text-based format is the files can be rather large compared to similar binary formats such as STL and compressed files such as 3MF.

OBJ Notes

Our tool will save any material and texture files separately, these additional files will be included with your final OBJ file at the time of download.

Supported Features

  • Mesh geometry
  • Materials (Via a MTL file)
  • Textures (PNG, JPG, TGA formats)

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