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Convert Your 3D Mesh/Model U3D Files to OBJ

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Here we detail how to convert your U3D file to an OBJ file using the export options found within the SolidWorks application. Currently, our converters cannot convert directly from U3D to OBJ. However,  using the built-in export functions of SolidWorks, we can achieve the conversion.

Firstly, you will need to load your U3D file into SolidWorks and select the export to STEP option. Once you have your file in the STEP format, you can use our STEP to OBJ converter to complete the conversion process.

How to Convert your U3D to OBJ Online?

Here are two simple steps to convert your U3D to OBJ.

Open your U3D File

Open your U3D file in SolidWorks and select the Export to STEP option

Convert the STEP File

Use our STEP to OBJ converter to complete the conversion

Frequently Asked Questions

How long does it take to convert my U3D to OBJ?

We aim to process all U3D 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 U3D 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 U3D to OBJ on ImageToStl.com?

Yes, of course! We do not store the U3D 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 my U3D to OBJ on Windows, Linux, Android, iOS or Mac OS?

Yes! Our U3D 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 U3D 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.

Can I get support with converting my U3D to OBJ?

Yes. When you have converted your U3D to OBJ, there is a "Feedback" option that you can use to let us know of any issues you encountered when converting your file.

Will the OBJ file retain the textures from my U3D file?

Yes! If your U3D file contains textured geometry, the texture image files along with the texture coordinates (UV data) will be exported with the final OBJ file.

File Format Information for U3D to OBJ

ExtensionU3D
Full NameUniversal 3D
Type3D Model
Mime Typemodel/u3d
FormatBinary
ToolsU3D Converters, 3D Model Voxelizer, Create U3D Animation

Description

The U3D file is a 3D file format (Universal 3D) developed by a consortium of well-known companies in 2005 with the idea of creating a standardized file format for storing 3D data, including mesh vertices, textures, bones, and effects.

U3D files are binary in nature, containing a block-based structure that, following later revisions, could be extended with custom blocks.

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 models/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 straightforward to parse in 3D modeling applications. A downside of the text-based format is that 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 an MTL file)
  • Textures (PNG, JPG, TGA formats)

How does it work?

Converting from the U3D 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 U3D file to a valid OBJ 3D model. Let's start with the conversion process, which involves the following steps:

Step 1: Read the Source U3D File

In its simplest form, an U3D 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 U3D file format, please see this great article that goes into a lot of detail explaining the U3D format.

Step 2: Process File Data

With the U3D 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 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 modeling. Most 3D modeling software can open OBJ files, which means our tool now needs to take the in-memory 3D model we created in step 2 and convert it to the OBJ format, ensuring it can be opened in all 3D modeling software with no compatibility issues.

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