Xfruits is a free web service that will help you to convert RSS into different formats. You can convert your RSS into RSS to web, RSS to mobile, RSS to PDF, RSS to mail, RSS to voice etc. It is very easy and simple to use anybody. You must register to use xfruits. XFruits is already available in English, French and Spanish version.
To convert RSS first you sign up is xfruits account and paste your URL then the converted format will appear soon.