So do you have a .deb package that you need turned into a .RPM but don't know how to repackage it?
Alien is the Answer
You can get it in most mainline repos so just use your preferred way to install.
Alien is a program that automates repackaging.
sudo alien -d packagename.rpm
For converting .deb to .rpm
su/sudo alien -r packageman.deb
.rpm to .deb
Then just drag and drop your new converted package into the terminal and install.
No because of difference in dependency name you may have to do some trouble shooting, so it isn't foolproof.
It isn't being maintained at this moment but it should be picked up again.
some more commands here: