Files with loaded file extension are commonly used by µTorrent, a software for Microsoft Windows and Apple Mac OS X (macOS) operating systems that allows users to download data form BitTorrent network.
The loaded file stores some kind of data used by µTorrent.
How to open:
A loaded files are sued for internal purposes of µTorrent.
How to convert:
As far as we know, this .loaded file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.