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Our free and fast tool will convert most 3D mesh or AC (AC3D) model files to a standard FBX (Autodesk Filmbox) 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 AC files; up to 25 files at a time can be converted.
To convert your AC file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a FBX file and will be ready for download shortly afterwards. For more information about the AC to FBX conversion process, see the conversion information section below.
| Extension | AC |
| Full Name | AC3D |
| Type | 3D Model |
| Mime Type | text/plain |
| Format | Text |
| Tools | AC Converters, 3D Model Voxelizer, Create AC Animation, AC Viewer |
The AC file format is the native format used by the 3D graphics application AC32. The AC32 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 AC 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 AC file contains material or color information, this will be brought over where possible.
| Extension | FBX |
| Full Name | Autodesk Filmbox |
| Type | 3D Model |
| Mime Type | application/octet-stream |
| Format | Text & Binary |
| Tools | FBX Converters, 3D Model Voxelizer, Create FBX Animation, FBX Asset Extractor, Text to FBX, FBX Viewer |
| Open With | Blender, MeshLab |
The FBX format by AutoDesk was originally developed by Kaydara in the 1990s as a means to store 2D or 3D content with motion data. It has evolved over the years to become a widely used format by 3D modeling applications such as Blender, 3D Studio Max, and others due to its 3D animation capabilities.
The format is used to contain 3D models, which include vertices, faces, and other 3D geometry along with animation data. The format is proprietary; however, there is a publicly available API to use for development purposes. The file contents can be either text or binary, and work has been carried out by the Blender Foundation to document the format.
If your original model file contains texture images and other texture-related data, these will be included in the final FBX file.
Converting from the AC file format to FBX 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 AC file to a valid FBX 3D model. Let's start with the conversion process, which involves the following steps:
In its simplest form, an AC file is a plain text file containing human-readable 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 AC file format, please see this great article that goes into a lot of detail explaining the AC format.
With the AC 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 FBX format.
With the conversion process entering its final stages, our tool now needs to take the in-memory 3D model we have created in step 2 and convert it to the FBX format.
First click the "Upload..." button, select your AC file to upload. Select any configuration options. When the AC to FBX conversion has completed, you can download your FBX file straight away.
We aim to process all AC to FBX 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 AC file you submit to us. The resulting FBX 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 AC 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 FBX file quickly.
Yes! Our AC to FBX 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 AC 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 AC to FBX, 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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