Loan Calculator
Monthly payment and true total cost for any fixed-rate loan — auto, personal or student — with a full amortization schedule and an extra-payment simulator.
🔒 100% private. Calculations run in your browser. Your loan details never leave your device.
Loan details
Optional — see how much interest you save by paying a little extra.
Monthly payment
$0
Total interest
$0
Total of payments
$0
Payoff time (with extra)
—
Interest saved by extra
$0
Amortization schedule (with extra payments)
| Year | Payments | Principal | Interest | Balance |
|---|
How the loan payment is calculated
M = P × [ r(1+r)ⁿ ] / [ (1+r)ⁿ − 1 ]
where P is the loan amount, r = APR ÷ 12, and n = years × 12. The same formula powers mortgages, auto loans and most personal loans.
Extra payments are applied directly to principal each month. Even $50/month extra on a 5-year auto loan can save hundreds in interest — and the schedule above shows exactly when you'd be debt-free.
Note: Assumes a fixed rate with monthly compounding and no fees. Some loans (variable-rate, simple-interest auto loans, loans with origination fees) differ slightly. Estimates only — not financial advice.
Related tools
🏠 Buying a home? Use the mortgage calculator · 💳 Planning debt payoff? Compare extra payments here with your budget via the paycheck calculator.