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Loan Calculator

Estimate monthly loan payments, lifetime interest, and full cost for fixed-rate financing: auto, personal, student-style simplifications, or mortgage principal-and-interest-only scenarios. Open the amortization schedule to see principal vs interest each month.

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Payment Summary

Monthly Payment
$0.00
Total Principal
$0.00
Total Interest
$0.00
Total Cost of Loan
$0.00
Principal vs Interest
Principal 100% Interest 0%

Amortization Schedule

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How to use this loan payment calculator

Use it when you want quick answers to “what is my monthly payment,” “how much interest will I pay,” and “how does term length change the cost.” It suits level-payment loans where the rate stays fixed for the whole payoff window.

  1. Enter loan amount (principal borrowed).
  2. Enter annual interest rate as a percent (APR-style input for the nominal yearly rate).
  3. Select term in years or months.
  4. Optional start month labels rows in the amortization table.

Expand Show Full Schedule to audit principal vs interest period by period. Remember: real mortgages often add taxes, insurance, and HOA outside this principal-and-interest core.

Fixed amortization formula

Payments follow the standard amortizing loan identity: solve for the payment that zeros the balance after n periods at rate r per period. Early periods pay more interest; later ones chip away more principal when the rate is fixed.

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Inputs stay on your device while figures update. Clear the form when you finish if you share the machine.

Frequently Asked Questions

Fixed-rate loans with equal monthly payments and full payoff at term end: typical auto and personal products, and simplified mortgage principal-and-interest schedules. It does not model ARM resets, interest-only periods, balloons, or revolving credit.
A month-by-month ledger: each row shows interest due on the remaining balance and how much principal that payment retires. Early rows skew toward interest; later rows principal when the rate is fixed.
Math matches the usual amortizing payment equation for fixed rates. Your lender’s disclosure can still differ because of day-count conventions, fees rolled into principal, prepaid interest, or escrow for taxes and insurance.
Raising the quoted annual rate increases interest accrued each period, so the fixed payment must rise to retire the same principal on schedule—or you pay less principal per dollar early on when you hold payment flat elsewhere. Compare scenarios here before committing.
No. The schedule is generated locally. Principal, APR, and term values are not uploaded as part of running this calculator.
Shorter terms raise each payment and usually cut total interest. Longer terms ease cash flow month to month but raise lifetime finance charges. Toggle term lengths here to see both sides on your numbers.
No. Outputs are principal-and-interest on a plain fixed schedule. Map escrow, mortgage insurance, HOA, or one-off prepayments separately when they apply to your loan.

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