Loan & Mortgage Calculator
Work out your monthly loan or mortgage payment, total interest and an amortization schedule — instantly, in your browser. Free and private.
Your loan
- Monthly payment
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- Total paid
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- Total interest
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First year — amortization schedule
| Month | Payment | Principal | Interest | Balance |
|---|
How to use
- Type the loan amount, the annual interest rate and how long you’ll pay it off (years, plus extra months if you need them).
- Read your monthly payment, the total you’ll pay back and the total interest — they update as you type.
- Scroll down to see the first year of the amortization schedule, showing how each payment splits between principal and interest.
FAQ
How is the monthly payment worked out?
It uses the standard amortization formula: M = P·r·(1+r)ⁿ ÷ ((1+r)ⁿ − 1), where P is the loan amount, r is the monthly interest rate (the annual rate divided by 12) and n is the number of months. If the rate is 0%, the payment is simply the amount divided by the number of months.
What is an amortization schedule?
It’s a month-by-month breakdown of your payments. Early on, most of each payment goes to interest and only a little to the balance; over time that flips. This calculator shows the first twelve months plus the running totals so you can see the pattern.
Is anything sent to a server?
No. Every figure is plain maths done in your browser, so nothing you type is uploaded. The calculator works offline and keeps your numbers private. Results are estimates and don’t include fees, taxes or insurance.