It is common to convert docx to doc in order to view docx files in Microsoft Office Word 2003 or earlier. But Docx2doc.com can also do the reverse conversion, doc to docx. Why is converting doc to docx useful?
Some web sites and recipients now require the .docx file format exclusively, and it is handy to have the ability to generate these files no mattter what computer you are working on. For example, if you are travelling or using a shared computer installed with Word 2003 or earlier it's nice have the option to do this conversion.
We feel converting doc to docx is a great service to offer in case this conversion is necessary for our users. Doc to docx file conversion will probably become more common as the doc format is phased out in the future.
You may not need this functionality right away, but if you find the need to generate DOCX files remember that www.docx2doc.com offers a doc to docx converter as well.