3ds Max supports export to 3D printing format (STL - Stereolithography) and as such is the obvious choice for max to stl conversion. Other software with 3ds Max format support may also be able to help you, but using the original software is always best to ensure maximum compatibility.
Convert 3ds Max (3D Studio MAX) scene to Stereolithography CAD file.
We found 2 software records in the database related to .max to .stl file format conversion.
Microsoft Windows software - convert max to stl on Windows
A 3D CAD translation softwate
Convert from max file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned max to stl. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A widely-used 3D animation application from Autodesk