Mortgage Calculator
Estimate a fixed monthly principal-and-interest mortgage payment and its lifetime borrowing cost.
Visual summary
Mortgage balance and interest over time
Compare principal and interest, see how each payment interval changes, and follow the projected balance to payoff.
Total repayment
Principal and interest payments
Payoff projection
| Period | Principal paid | Interest paid | Remaining balance |
|---|---|---|---|
| Start | $0.00 | $0.00 | $200,000 |
| 15 mo | $3,093 | $14,893 | $196,907 |
| 30 mo | $3,334 | $14,653 | $193,573 |
| 45 mo | $3,593 | $14,394 | $189,980 |
| Year 5 | $3,872 | $14,115 | $186,109 |
| 75 mo | $4,172 | $13,814 | $181,936 |
| 90 mo | $4,497 | $13,490 | $177,440 |
| 105 mo | $4,846 | $13,141 | $172,594 |
| Year 10 | $5,222 | $12,764 | $167,371 |
| 135 mo | $5,628 | $12,358 | $161,743 |
| 150 mo | $6,065 | $11,921 | $155,678 |
| 165 mo | $6,536 | $11,450 | $149,142 |
| Year 15 | $7,044 | $10,942 | $142,098 |
| 195 mo | $7,591 | $10,395 | $134,506 |
| 210 mo | $8,181 | $9,805 | $126,325 |
| 225 mo | $8,817 | $9,170 | $117,509 |
| Year 20 | $9,501 | $8,485 | $108,007 |
| 255 mo | $10,240 | $7,747 | $97,768 |
| 270 mo | $11,035 | $6,951 | $86,733 |
| 285 mo | $11,892 | $6,094 | $74,840 |
| Year 25 | $12,816 | $5,170 | $62,024 |
| 315 mo | $13,812 | $4,175 | $48,212 |
| 330 mo | $14,885 | $3,102 | $33,328 |
| 345 mo | $16,041 | $1,946 | $17,287 |
| Year 30 | $17,287 | $699.53 | $0.00 |
Calculations happen locally in your browser.
How to use this calculator
- Enter the mortgage principal, annual interest rate, and term in years. The term must resolve to whole monthly payments.
- Review the live result and use Copy result when you need to share it.
How the calculation works
The standard amortization formula applies a monthly interest rate across every monthly payment. A 0% loan is divided evenly without using the interest formula.
Formula
Payment = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1)
Step-by-step calculation
- Enter the mortgage principal, annual interest rate, and term in years. The term must resolve to whole monthly payments.
- The standard amortization formula applies a monthly interest rate across every monthly payment. A 0% loan is divided evenly without using the interest formula.
- Check the displayed result, then copy it if needed.
Worked example
A $200,000 mortgage at 6% for 30 years has an estimated monthly principal-and-interest payment of about $1,199.10.
Risk guidance
Frequently asked questions
Does this include taxes, insurance, or fees?
No. The result covers principal and interest only; ownership costs and lender fees must be added separately.
Does this tool send my inputs anywhere?
No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.
How should I use the result?
Check that the entered units and values match your situation, especially around dates, breaks, and rounding.
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