SLDPRT File Extension
SolidWorks Part Format
- File Type sldprt
- Developer Dassault Systemes
- Popularity
- Application SolidWorks
- Category CAD, CAM and CAE Files
- Format Binary
What is a SLDPRT file?
SolidWorks Part Format, identified by the SLDPRT extension, is a CAD, CAM and CAE Files type and includes 148 files.
With the creation of the SolidWorks Part Format (SLDPRT), Dassault introduced file format along with 6 programs built for their use.
SLDPRT files are supported by Windows, Linux and Mac OS. You can open a SLDPRT file using one of 20 programs, for example SolidWorks, Autodesk Fusion 360 and Autodesk 3ds Max.
Programs that support SLDPRT files
Windows
Linux
Online Services
How to open a SLDPRT file?
The most common reason why a SLDPRT file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
The most popular programs for working with SLDPRT files are SolidWorks, Autodesk Fusion 360 and Autodesk 3ds Max. To get the latest version of SolidWorks, open the SolidWorks website where a universal installer for all operating systems is available.
Once setup is done, your operating system should assign SolidWorks as the default app for SLDPRT files.
Make SolidWorks the default SLDPRT viewer
Changing the default program in Windows
- Start by right-clicking on your SLDPRT file and selecting the "Open With" option. From there, click "Choose another app" to continue;
- Inside the popup window, scroll through the list of applications and specifically choose SolidWorks as the application to associate with your SLDPRT file;
- Check the "Always use this app" checkbox and click "OK".
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired SLDPRT file to access a dropdown menu of actions;
- Select "Open in application" and click "Other";
- Scroll down to the bottom of the window, where you will find the "Enable" menu. Default, "Recommended Programs" will be selected;
- In this menu, choose "All Programs" and navigate to SolidWorks. Check the box next to "Always open in app" to make it the default program.
Convert to and from SLDPRT
If a SLDPRT file is difficult to handle, you might try converting it to formats such as DXF, DWG, OBJ, IGS, IGES or similar, which may be easier to work with.
Please note that after converting a SLDPRT file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.
Convert SLDPRT to other file formats
Finding answers to SLDPRT file problems
If you encounter issues with SLDPRT files, don’t worry—most can be fixed with minor software adjustments. Refer to the troubleshooting tips below.
What are the signs that my SLDPRT file is damaged?
Corrupted SLDPRT cad, cam and cae files may have one or more of the following symptoms:
- Poor performance when editing a file in SolidWorks;
- Opening or processing the file in SolidWorks or other programs causes instability or crashes in the program;
- The file shows errors when trying to open it or does not open completely;
- Unexpected expansion of the total size of the SLDPRT file;
- Working with the file triggers the display of error messages;
Why does SolidWorks quit or crash unexpectedly?
SolidWorks crashes can be attributed to outdated software. Make sure you have installed the latest updates for SolidWorks products.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What methods can be used to repair a damaged SLDPRT file?
Use a recovery program to open the damaged SLDPRT file and navigate to the "Repair" menu item. Wait for the recovery process to finish, as it will automatically repair damaged cad, cam and cae files.
How to edit a SLDPRT file?
To edit SLDPRT files, you need to install specialized software that allows you not only to open but also to modify cad, cam and cae files. Online SLDPRT editors usually provide fewer features than software created specifically for SolidWorks Part Format.
List of Top SLDPRT editors 2026
Following these criteria, we have put together a list of recommended SLDPRT editors.
| SLDPRT Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Autodesk Fusion 360 | Autodesk | Windows, Mac OS, Linux | 4.5 out of 5 (39 reviews) |
| SolidWorks | SolidWorks | Windows | 4.3 out of 5 (43 reviews) |