The mortgage payoff calculator helps you find out. This is the calculated number of payments remaining for this loan.It is based on your current balance, payment and interest rate. Use our free loan payment calculator to estimate monthly payments, interest, and repayment timelines. A personal loan calculator shows your monthly personal loan payments based on the loan amount, interest rate and repayment term. Quickly see how much interest you could pay and your estimated principal balances. Enter prepayment amounts to calculate their impact on your mortgage. Early Payoff Calculator. Find the additional payment required to pay off your loan early. LendingTree's personal loan payment calculator can help you see how much your loan could cost, including principal and interest.