How to use the result
Test more than one scenario. A shorter term usually raises the monthly payment but can reduce interest. A longer term often lowers the payment but may increase total repayment. If there is an origination fee, compare both the cash you receive and the amount you must repay.
The formula
The calculator uses the standard amortizing-payment formula based on principal, monthly interest rate, and number of monthly payments. At 0% APR, it divides principal evenly across the term.