Convert LST to XML

Unfortunately, we do not have information about any particular lst to xml conversion or what it might represent. Numerous different .lst file types exists and it is likely that at least some of them are already in XML format. You can always try to open your .lst with text/html/xls editor and check out the syntax, which will help you determine the best course of action.

Simply put, it is impossible to convert LST to XML directly.
Thus, there is no so-called lst to xml converter or a free online .lst to .xml converter to be found.