Advanced Real Estate Mortgage Calculator is an easy-to-use financial calculator and a great tool for real estate websites. Quickly calculates monthly
The calculator is great for sidebars (seen here in the Twenty Eleven theme).
Placement on the sidebar is easy with the built-in drag and drop widget interface.
The calculator can also easily be placed in the content of your page or post using its shortcode.
This plugin's shortcode [mortgage-calculator] can be placed practically anywhere.