Using the popular "Nicedit" editor, it lets you remove the custom tags and parameters used by MS word or other sources like websites to control formatting, converts non-breaking spaces to normal ones, and tries to make something presentable. The HTML source and/or plain text can then be copy/pasted out. You can also just enter and edit text, use the simple formatting, and convert this to HTML for inclusion in your websites etc... (TIP: when styling text, be sure to apply Font Format to paragraphs and headers, to get <p> and <hn> tags instead of <div>s.)
Type or paste text from your source document into the Editable text area below (delete what's there first of course).
The text can be analysed by pressing the "CONVERT" button. The "SANITISE" button can be used to remove the large amount of un-usuable formatting from e.g. MS-Word.
The editor can be used to apply some rich-text formatting to the source text. Press "convert" before copy/pasting the HTML code into your website.