.CH3 File

The ch3 file extension is mainly associated with the Harvard Graphics v3.0 software and used for its default chart or drawing file.

Harvard Graphics was a pioneering, award-winning presentation program developed for DOS and Microsoft Windows by Software Publishing Corporation.

This ch3 file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Files with ch3 file extension can be typically found as charts or drawings saved using Harvard Graphics.

How to open:

Your best bet for opening *.ch3 files would be to use the original Harvard Graphics software. But you may find other programs capable of the same.

How to convert:

Some sort of export to other graphics formats may be possible with Harvard Graphics.