Greetings!
For the last few months, as an experiment, I have been using Calibre to convert my stories into various ebook formats. Up until these last months, they have only been available in HTML format.
While I did have a number of false starts in the beginning, the converstions are generally working OK. [I do fines that some fonts in some formats are not suppored or supported well. I do note that drop caps with seem to work in ePub, do not work in mobi or AZW3. Such is life. So the drop caps found in my PDF (created with Acrobat Pro) are removed for Calibre.]
My real need is to be able to click once and convert a docx into all three formats (epub, AZW3 and mobi) at the same time. I can't seem to find a way to do this.