There are quite a few softwares available for this, but hardly any will convert them accurately. most of them do not recognize line changes and put a para mark at the end of the line. So you cannot easily reformat the document, which is possibly the reason you want to convert the documents. So you can also try able2doc, but this one also suffers from the same problem and is licensed.
Download here
My suggestion is, just copy paste the text and use screenshot tools to get the image.