CATPART File Extension

CATIA V5 Part Format
- File Type catpart
- Developer Dassault Systemes
- Popularity
- Application CATIA
- Category CAD, CAM and CAE Files
- Format Binary
What is a CATPART file?
CATIA V5 Part Format, identified by the CATPART extension, is a CAD, CAM and CAE Files type and includes 148 files.
The CATIA V5 Part Format (CATPART) was created by Dassault, a company that developed file format and produced 6 programs for their use.
CATPART files are compatible with various operating systems, including Windows, Linux and Mac OS. If you need to open a CATPART file, you can use one of 14 programs, such as CATIA, Autodesk Fusion 360 and Autodesk Inventor.
Programs that support CATPART files
How to open a CATPART file?
If you’re having difficulty opening a CATPART file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.
CATIA, Autodesk Fusion 360 and Autodesk Inventor are recognized as the most popular software solutions for dealing with CATPART files. To install the most up-to-date edition of CATIA, visit the official Dassault website. You can download the build that works across all operating systems.
After successful installation, your operating system should seamlessly handle CATPART files via CATIA.
Set CATIA as your default CATPART viewer
Setting a default program by file type in Windows
- Right-click your CATPART file, then navigate to the "Open With" option and click "Choose Another Application" to continue;
- From the list of applications in the pop-up window, find and select CATIA as your desired application;
- Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening CATPART files.
Set default app to open files on Mac
- Right-click or Control + left-click on the desired CATPART file to open a menu of available actions;
- Select "Open in application" and click "Other";
- Go to the lower section of the window, where you will find the "Enable" menu. By default, it is set to "Recommended Programs";
- Select "All Programs" from this menu and proceed to search for CATIA. Check the box next to "Always open in app" to set it as the default option.
How to edit a CATPART file?
Editing CATPART files requires installing professional software that lets you open and edit cad, cam and cae files. Online editors have more limitations compared to dedicated CATIA V5 Part Format programs.
List of Top CATPART editors 2026
With the mentioned criteria in mind, we have assembled a selection of CATPART editors.
| CATPART Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| CATIA | Dassault | Windows | 4.8 out of 5 (44 reviews) |
Convert to and from CATPART
When a CATPART file is not easy to work with, converting it to formats like DXF, DWG, OBJ, IGS, STEP or other comparable types may help.
Converting a CATPART file may not fully retain all functionality, but it is generally possible to return it to the original format.
Convert CATPART to other file formats
Solving Common CATPART File Challenges
CATPART files may present some challenges, but most can be easily addressed with minor software tweaks. See the troubleshooting tips below for guidance.
Are there any techniques or tools available to repair a damaged CATPART file?
Open the damaged CATPART file with a recovery program, and then select the "Repair" menu item to start the repair process. Wait for the recovery process to finish, as it will automatically repair damaged cad, cam and cae files.
What are the telltale signs of a corrupt CATPART file?
Corrupted CATPART cad, cam and cae files may show the following signs:
- Unexpected expansion of the total size of the CATPART file;
- Opening or processing the file in CATIA or other programs causes instability or crashes in the program;
- The file shows errors when trying to open it or does not open completely;
- While working with the file, error messages appear;
- Editing the archive in CATIA is accompanied by slow performance or delays;
What factors contribute to CATIA crash?
CATIA crashes can occur due to outdated software versions. To mitigate this, install the latest updates for Dassault products.
A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.












