If you don't have access to the latest version of 3ds Max to perform a "Save As," these third-party online platforms can help:
: A well-known general file converter that can handle .3ds and some .max files to convert them into other 3D formats. Official In-App Method (Save As) Convert 3ds Max File To Older Version Online
The desire to convert 3ds Max files to older versions online is a logical response to a fragmented software ecosystem. However, due to the proprietary and complex nature of the .max file format, a simple drag-and-drop web converter remains a technical impossibility. The data architecture of modern 3ds Max files cannot be interpreted by older engines without the mediation of the software itself. If you don't have access to the latest
(for architectural models):