For some reason or the other you might find yourself wanting to convert a direct download link to a torrent file, for example for downloading that torrent on your seedbox if your seedbox can't download from direct links or any other reason that you might need this for, and let me tell that is possible and can be easily done through a website that offers this type of service for you for free, the website link is:

http://burnbit.com/

You place a link in the input field that the site provides and then click 'Burn' this will make the site download the files or 'burn' them and after this process you will be given an option to download this torrent you can use it on your PC, seedbox or whatever, it will be seeded by a webseed and tracked by a public tracker (openbittorrent), the downside with this service is usually the torrent downloading speed is not fast enough it could take some time although I'm not sure if this is the case with all files/servers or just the ones that I tried. also you can use the site without signing up but if you create an account you will have the ability to keep a list of all your torrents and you can track their downloading progress from there prior to them being converted to a torrent.