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. Enter your details below to estimate your monthly mortgage payment with taxes, fees and insurance. Not sure how much you can afford? Use this free mortgage calculator to estimate your monthly mortgage payments and annual amortization. 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.