A mortgage calculator is a simple form that uses basic details of your mortgage loan to calculate what you expect to be paying for your home loan each month. You can use it to see what loans may cost at different interest rates, thus helping you calculate the right mortgage loan for your home.

The primary factor that the mortgage calculator generally asks you for is the amount of money you have to borrow from the bank, in other words, the loan amount. It also asks the interest rate at which you expect to repay the loan and the time you need to return the loan, called the loan term.