Why not start a Windows instance with a cloud provider such as Amazon Web Services or Microsoft Azure? You then have your own Windows system which you can access via VNC, which can be done from a tablet or such. On that Windows system you can install anything you want, run anything you want, and import/export anything you want. When done, delete the instance.
If you stay within the "free tier" (Amazon term; Microsoft will have something similar) this'll even be free. Otherwise, for a small Windows system, a few cents per day.
Heck, if you have a tablet with VNC I can setup a Windows machine on Amazon for you within my own account, for a few days. My treat.
(If you only have a mobile phone then you can run VNC as well, but it'll be extremely awkward due to the small screen size. Or you can go to a public library and see if they have a VNC client installed on their machines.)
Edited: On second thought, yes, you can use a remote Windows instance to convert all sorts of stuff, but obviously you won't be able to connect your actual physical GPS unit via USB to that Windows instance. Unless you have a local computer and some sort of USB forwarding feature, but then you wouldn't need a remote computer in the first place. So if you actually need your GPS unit to connect to the Windows system, this remote solution won't work.
Last edited by BackPacker; 08-16-2017 at 11:33 AM.