need a Calculator for my website

Software needed/script

[dailypress]

Looking for a mortgage calculator software or code for my website.
I searched online but couldnt find the best and "simple to use and install version"

Any suggestions?

[Dabrowski]

What you want is a compound interest calculator.

This page has one, and the JavaScript source code which is actually surprisingly simple.

[online-calculators.co.uk...]