The mortgage payoff calculator helps you find out. This tool allows you to perform standard mortgage calculations.Use our free loan payment calculator to estimate monthly payments, interest, and repayment timelines. Use our loan payoff calculator to see when your mortgage or other loan will be paid off in full. Calculate your Loan Payment. A personal loan calculator shows your monthly personal loan payments based on the loan amount, interest rate and repayment term. Calculate a mortgage payoff amount earlier to better understand what your loan payments balance. Learn how long it could take to get a pay off quote. This financial planning calculator will figure a loan's regular monthly, biweekly or weekly payment and total interest paid over the duration of the loan. Use SmartAsset's free Texas mortgage loan calculator to determine your monthly payments, including PMI, homeowners insurance, taxes, interest and more.