Extract text from 3D CAD assembly files (A3D)
To convert A3D assembly files to another format, you need KOMPAS-3D or other 3D software.
To convert other file formats to the "CAD Assembly File" file type, you need software like KOMPAS-3D or a similar tool.
An .A3D file is a proprietary 3D CAD assembly model used to store complex product assemblies, packaging designs, or spatial reality meshes. The most common applications generating these files are KOMPAS-3D by ASCON, ArtiosCAD by Esko, and Bentley Systems ContextCapture. These files contain intricate geometrical data, parametric histories, and references to external part files.
Because .A3D is a closed, proprietary format, it is extremely difficult to manage outside of its native ecosystem. Files often exceed 100MB and require expensive, enterprise-level subscriptions to open. Standard web browsers and generic 3D viewers cannot render them. Users frequently need to convert .A3D files to collaborate with manufacturers, clients, or engineers who use different CAD software like SolidWorks or AutoCAD.
For best compatibility, you should convert an .A3D file to universal CAD formats like STEP or IGES. If you only need 3D printing or rendering, STL or OBJ are excellent targets. However, converting to these universal formats will strip the parametric history, leaving a "dumb" solid model that cannot be easily edited.
Standard online converters fail to process .A3D files because the format often relies on undocumented internal structures. Only the original software can properly parse the parametric data. Since some .A3D files are internally structured as ZIP archives or JSON data, our tool can often extract embedded previews, raw text, or structural data even without the native CAD software.
Convert.Guru analyzes your A3D file, detects the exact format, and lets you read the text inside.
Users also converted M3D, CDW, ARD, SIG, BAK, FRW, XMCD, RAR, PCAP, JPG, ZIP, BTW and SGN files.
If you want to convert A3D file to OBJ, FBX, DAE, 3DS, MAX, BLEND, MA, MB, C4D, STL, PLY or WRL, you can use KOMPAS-3D or similar software from the "3D CAD Assembly Model" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to A3D, try KOMPAS-3D or another comparable tool in the "3D CAD Assembly Model" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our A3D converter.