Loan Calculator
Free loan calculator with live results, full amortization schedule, extra-payment savings, scenario comparison, and shareable permalinks. Works for mortgages, auto, and personal loans.
Frequently asked questions
How is a monthly loan payment calculated?
Payments use the standard amortization formula: M = P × r ÷ (1 − (1 + r)^−n), where P is the amount borrowed, r is the monthly rate (APR ÷ 12), and n is the total number of payments. Early payments are mostly interest; later payments are mostly principal.
Does an extra monthly payment really save that much?
Yes. Extra payments go straight to principal, and every dollar of principal removed early is a dollar that never accrues interest again. Enter an extra amount above and the calculator shows exactly how much interest you save and how many months you cut.
Can I share my calculation?
Yes. Your inputs are stored in the page address, so copying the link shares the exact calculation. You can also print or save a PDF summary, export the schedule to CSV, or embed the calculator on your own site.
Want the concepts behind the numbers? Read how loan amortization actually works.