Free mortgage payoff calculator to evaluate options to pay off a mortgage earlier, such as extra payments, bi-weekly payments, or paying back altogether. The mortgage payoff calculator helps you find out.Use our free mortgage calculator to easily estimate your monthly payment. See which type of mortgage is right for you and how much house you can afford. Use this free Pennsylvania mortgage calculator to estimate your monthly mortgage payments and annual amortization. Use our early mortgage payoff calculator to see how much you could save on interest in the long run. Use this calculator to see how making extra payments affects how soon you can pay off your mortgage and how much interest you pay on your home loan. Use the extra payment calculator below to help determine how advantageous it is to pay a little extra each month toward your mortgage.