In Ubuntu/Linux Mint you can install softwares from Software Centers or via PPA/Synaptic . If any software is not available in deb/software center/ppa and it’s only available in rpm, than you can convert that rpm file to deb package with one command using terminal.
First install packages that will convert rpm packages to Debian
sudo apt-get install alien dpkg-dev debhelper build-essential
Now convert package from RPM format to Deb format, use the following command. Change your packagename in command:
sudo alien packagename.rpm
To install the deb package
sudo dpkg -i packagename.deb
