A mortgage calculator is a readily available technology which can help you determine what you can afford, compare rates, understand the benefits of putting down a little extra money and illustrate how much you can save by paying more on principle over the life of the loan.
 
     You can use the mortgage calculator to help figure out your down payment, monthly payments and how much you can spend when buying a house.
 
     Mortgage calculators are about 99.9% accurate.