This Amortization Schedule calculator will tell you how much a monthly payment will be and how much you will pay altogether in principal and interest if you pay the mortgage for the full term. It will also tell you how much principal you will still owe after any given payment. You input the amount borrowed, the interest and the number of payments to be made. (360=30 years). This is a very handy calculator. Just save it to your desktop and you will aways have this free calculator at your fingertips.