I received an email regarding the above tool. I reviewed it and it is indeed helpful in getting you focus in paying your debt. In the form just fill in the fields and click “calculate”. After that it shows you a new form where you can slide the additional amount you can add to your usual monthly payment and it will give you the date you will be able to pay off your debt earlier and the interest you will save due to the shorter payment period you will have due to your additional amount you pay on top of your monthly payment.
Check it out at http://www.thesimpledollar.com/debt-payoff-calculator/