Free personal loan calculator that returns the monthly payment, real loan cost, and the real APR after considering the fee, insurance, and interest of a personal loan. Also experiment with other loan calculators, or explore hundreds of calculators addressing other topics such as math, fitness, health, and many more. The best free online Loan Calculator is right on this page and so easy to use that literally you could have an answer to your loan question in seconds. All you have to do to use the free Loan Calculator is just enter in the amount of the loan, length of the loan (in months), and the loan monthly interest rate.