Financial-Math Calculator is a small financial calculator, it will help you calculate some basic financial equations (time value of money). You can find present / future value of a single sum , present / future value of an ordinary annuity, rate, number of periods, periodic payment, interest payment.
Sensitivity Analysis Option:
With this toolkit you can check how payment is affected when rate or number of periods changes. Suppose that you take a loan. What you need to know is the effect of rate, number of periods on your periodic payment. This tool is able to estimate those impacts.

The license of this software is Freeware, you can free download and free use this calculator software.