Short description of Mortgage Calculator 1.0: Mortgage Calculator calculates monthly payment and prints amortization schedule. Simply enter the loan amount, interest rate, and number of years of your loan, and click on "Compute Payment" button. Your monthly payment will be shown in the window at the top. To print out your amortization payments including month, payment, principal, interest and balance click on ?Print Repayment Schedule?. And the Mortgage Calculator is FREE.