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Our free and fast tool will convert most 3D mesh or AC3D (AC3D) 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 AC3D files; up to 25 files at a time can be converted.
To convert your AC3D 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 be ready for download shortly afterwards. For more information about the AC3D to OBJ conversion process, see the conversion information section below.
| Extension | AC3D |
| Full Name | AC3D |
| Type | 3D Model |
| Mime Type | application/octet-stream |
| Format | Binary |
| Tools | AC3D Converters, 3D Model Voxelizer, Create AC3D Animation, AC3D Viewer |
The AC3D file format is the native format used by the 3D graphics application of the same name, AC3D. The AC3D program has been around since 1994 and started out life on the 16-bit Amiga home computer. Since that time, it has been ported to other major platforms, including Linux, Windows, and Mac OS.
An AC3D file uses a text based format to store the individual surface data that makes up the 3D model. Surfaces can be composed of polygons, lines, and other basic visual elements. The format is somewhat of a specialized format used mainly in simulations and video games.
If your AC3D file contains material or color information, this will be brought over where possible.
| Extension | OBJ |
| Full Name | Wavefront |
| Type | 3D Model |
| Mime Type | text/plain |
| Format | Text |
| Tools | OBJ Converters, 3D Model Voxelizer, Create OBJ Animation, Compress OBJ, OBJ Asset Extractor, Text to OBJ, OBJ Viewer |
| Open With | Daz Studio, MeshLab, CAD Assistant |
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.
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.
Converting from the AC3D 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 AC3D file to a valid OBJ 3D model. Let's start with the conversion process, which involves the following steps:
In its simplest form, an AC3D 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 AC3D file format, please see this great article that goes into a lot of detail explaining the AC3D format.
With the AC3D 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.
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.
Yes! If your AC3D file contains textured geometry, the texture image files along with the texture coordinates (UV data) will be exported with the final OBJ file.
We aim to process all AC3D 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.
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.
Yes, of course! We do not store the AC3D 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.
No. All our conversion tools process your AC3D file on our dedicated conversion servers, meaning you can use our tools on low-spec computers, laptops, tablets, and mobile devices and receive your converted OBJ file quickly.
Yes! Our AC3D 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.
Yes. Although you can use an Ad Blocker, if you like our AC3D 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.
Yes. When you have converted your AC3D to OBJ, there is a "Feedback" option that you can use to let us know of any issues you encountered when converting your file.
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