Twenty quick tools for everyday money math — no sign-up, figures shown as you type.
See the monthly payment, total interest, and what extra payments save you.
Uses the standard fixed-rate amortization formula for the scheduled monthly payment, then simulates the loan month by month to find the real payoff time and total interest — accounting for any extra payment you add toward principal. Works for auto loans, personal loans, or a simplified read on a mortgage.
For mortgages: principal & interest is calculated separately from taxes, insurance, and PMI. Add those in above to see a full estimated monthly payment — leave them at $0 if you just want the loan math.