Just enter the home price, your down payment amount, the interest rate, and the loan term, then press calculate and our mortgage calculator does the rest! It quickly takes the guesswork out of knowing how much home you can afford. With our advanced mortgage calculator, you can: Change the down payment to see how it would impact your monthly payment. Compare monthly payments for different home prices. Change the home price in the mortgage calculator to see how it affects your monthly payment. See how shortening or lengthening the loan term affects your monthly payment. Mix and match different factors based on the loan options you are considering. Vary the interest rate to see how much you might save or pay based on rate changes.