Our free and fast tool will convert most 3D mesh or FBX (Autodesk Filmbox) model files to a standard STEP (STEP-File) 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 FBX files; up to 25 files at a time can be converted.
To convert your FBX file, click the Upload button above and select the file to convert. Once selected, the file will be converted to a STEP file and will be ready for download shortly afterwards. For more information about the FBX to STEP conversion process, see the conversion information section below.
| 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 FBX file contains texture files and other texture-related data, these will be included in the conversion process.
| Extension | STEP |
| Full Name | STEP-File |
| Type | 3D Model |
| Mime Type | application/octet-stream |
| Format | Text |
| Tools | STEP Converters, 3D Model Voxelizer, Create STEP Animation, Text to STEP, STEP Viewer |
| Open With | CAD Assistant |
The STEP file format is a 3D format defined in 1994 and used to store 3D objects for use in computer-aided design (CAD) applications. STEP files are text-based, formatted files containing one instance per line.
Although STEP files are widely supported by most CAD applications, the format does have its limitations, such as the necessity to read the complete file into memory in order to parse the contents, and due to the textual storage of information, the files can be quite large.
Converting from the FBX file format to STEP 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 FBX file to a valid STEP 3D model. Let's start with the conversion process, which involves the following steps:
In its simplest form, an FBX file can be either a plain text or binary file containing 3D data such as vertices, faces, normals, and more. When combined, these make up the 3D model you see on your screen.
When our tool reads this 3D data, all we are interested in are the vertices, faces, and normals, as this is the only data that can be accurately converted into the final STEP file.
The FBX file can contain other data, such as material definitions and textures, that describe how a particular set of 3D geometry should be rendered. As we are creating an STEP file, which does not support materials and textures, we will be ignoring this data if it is present in the FBX file.
For more information regarding the FBX file format, please see this great article that goes into a lot of detail explaining the FBX format.
With the FBX 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 STEP 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 STEP format.
Our tool can read binary FBX versions 7.0 and above and text formatted FBX files version 6.4 and above. Please ensure your FBX version meets these requirements before uploading.
We aim to process all FBX to STEP 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 FBX file you submit to us. The resulting STEP 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 FBX 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 STEP file quickly.
Yes! Our FBX to STEP 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 FBX 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 FBX to STEP, 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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