Enter your loan amount, interest rate, and term, select principal & interest or interestโonly, then tap Calculate to instantly see your monthly payment, total cost, and a visual principalโvsโinterest breakdown with history, copy, and print options.
Mortgage Calculator
Free mortgage tool โ no sign-up
Calculate Your Mortgage in Seconds
Instantly estimate monthly payments, total interest, and generate a full amortization schedule. Includes taxes, insurance, PMI and extra-payment simulation โ all free and private.
Take the Guesswork Out of Your Home Loan
Buying a home is one of the biggest financial decisions you’ll make, and understanding exactly what you’ll owe each month shouldn’t require a finance degree. This mortgage calculator gives you a clear, instant breakdown of your monthly payment, total interest, and full amortization schedule โ so you can plan with confidence before you ever contact a lender. Whether you’re a first-time buyer, refinancing, or just running the numbers, everything below explains how the tool works and how to make the most of it.
What Is a Mortgage Calculator?
A mortgage calculator is a free online tool that helps homebuyers, homeowners, and real estate professionals estimate monthly mortgage payments based on loan amount, interest rate, loan term, and additional costs like property taxes, homeowners insurance, and PMI. It provides a detailed amortization schedule showing exactly how each payment is split between principal and interest over the life of the loan. Our calculator goes a step further by letting you simulate extra payments and instantly see how much time and money you can save.
How to Use the Mortgage Calculator
Enter Loan Details
Input home price, down payment, interest rate, and loan term. Use sliders or type exact numbers.
Add Taxes & Insurance
Optionally include property tax, homeowners insurance, and PMI for your true monthly cost.
Get Instant Results
Review monthly payment, amortization table, and try extra payments โ no waiting, no sign-up.
How the Mortgage Calculator Works
The calculator uses the standard amortization formula to compute the fixed monthly payment required to repay the loan over the chosen term. It then builds a complete amortization table by iteratively applying each payment to the outstanding balance. Every calculation runs in your browser โ no data is ever sent to a server.
Core Formula
M = P ร [r(1+r)^n] / [(1+r)^n โ 1]
M = monthly payment, P = loan principal, r = monthly interest rate, n = total number of payments
Key Features of This Mortgage Calculator
Full Amortization Table
See every month’s principal, interest, and remaining balance โ printable or downloadable.
Extra Payment Simulator
Add a fixed extra amount and instantly see years trimmed off your loan and interest saved.
PITI Breakdown
Separates principal, interest, taxes, insurance, and PMI so you know your true monthly cost.
Private & Secure
All calculations run locally in your browser. Your financial details never leave your device.
Benefits of Using a Mortgage Calculator
- โ Informed decisions โ know exactly what you can afford before contacting a lender
- โ Budget planning โ see your full monthly housing expense, not just the loan payment
- โ Interest savings โ experiment with extra payments and shorter terms to save thousands
- โ Loan comparison โ quickly compare different rates, down payments, and terms
- โ Financial education โ understand how mortgages work with a detailed amortization table
Types of Mortgage Loans
Fixed-Rate Mortgage
Interest rate stays the same for the entire loan term. Payments are predictable.
Adjustable-Rate (ARM)
Rate starts lower and adjusts periodically based on market indexes. Higher risk, potential savings.
FHA / VA / USDA
Government-backed loans with low down payment options. Specific eligibility requirements apply.
Mortgage Payment Breakdown
Your total monthly housing payment (often called PITI) consists of four main parts: Principal, Interest, Property Taxes, and Homeowners Insurance. If your down payment is less than 20%, you may also pay Private Mortgage Insurance (PMI).
Principal vs. Interest
Principal
The original amount you borrowed. Each payment reduces this balance. In the early years, a smaller portion of your payment goes toward principal.
Interest
The cost of borrowing money, calculated on the remaining balance. Over time, the interest portion decreases as the principal shrinks.
Property Taxes and Home Insurance
Property taxes are assessed by local governments and typically paid through an escrow account. Homeowners insurance protects against damage and liability. Both are usually required by lenders and can significantly impact your monthly payment. Our calculator lets you enter annual amounts to see the full picture.
Private Mortgage Insurance (PMI)
If your down payment is less than 20%, lenders typically require PMI. This insurance protects the lender, not you, and adds an extra monthly cost. The calculator allows you to input PMI either as a monthly dollar amount or as a percentage of the loan, so you can see how it affects your total payment.
Amortization Schedule Explained
An amortization schedule is a table that lists every mortgage payment over the life of the loan, showing how much goes to interest, how much goes to principal, and the remaining balance after each payment. In the early years, most of your payment goes toward interest; over time, more goes toward principal. Our calculator generates a full year-by-year or month-by-month schedule that you can print or copy.
Extra Mortgage Payments
Making extra payments directly toward the principal can dramatically reduce the total interest you pay and shorten the loan term. Even a small additional amount each month can cut years off your mortgage. Use our extra payment simulator to instantly see the new payoff date and total interest saved.
Factors That Affect Your Mortgage Payment
- ๐ท๏ธ Loan amount
- ๐ Interest rate
- ๐ Loan term (years)
- ๐ฐ Down payment size
- ๐ก Property taxes
- ๐ก๏ธ Homeowners insurance
- ๐ PMI (if applicable)
- ๐ Extra payments
Example Mortgage Calculation
Scenario: $350,000 home price, 20% down ($70,000), 30-year fixed rate at 6.5%, $3,000 annual taxes, $1,200 annual insurance, no PMI.
- โ Loan amount: $280,000
- โ Monthly principal & interest: $1,769.84
- โ Monthly taxes: $250
- โ Monthly insurance: $100
- โ Total monthly payment: $2,119.84
- โ Total interest over 30 years: $357,142
Who Can Use This Calculator?
- ๐ First-time homebuyers โ understand costs before you buy
- ๐ Refinancing homeowners โ compare current vs. new loan offers
- ๐ข Real estate agents โ provide instant estimates to clients
- ๐ผ Mortgage brokers & lenders โ illustrate different loan products
- ๐ Students & educators โ teach amortization concepts interactively
Common Mortgage Terms
- Amortization
- The process of paying off a loan through regular payments over time.
- APR
- Annual Percentage Rate โ the yearly cost of the loan including fees.
- Escrow
- An account where your lender holds funds for taxes and insurance.
- LTV
- Loan-to-Value ratio โ the loan amount divided by the home’s value.
Tips to Save Money on Your Mortgage
- Make a larger down payment to avoid PMI and reduce the loan amount.
- Choose a shorter loan term (e.g., 15 years) for lower total interest.
- Make extra payments toward principal whenever possible.
- Shop around for the best interest rate and compare lender fees.
- Improve your credit score before applying for a mortgage.
Advantages of This Calculator
- โ 100% free โ no sign-up, no hidden costs
- โ Instant, real-time results
- โ Complete PITI breakdown
- โ Downloadable amortization table
- โ Extra payment simulator
- โ Works on any device
Limitations of Mortgage Calculations
Our calculator provides estimates based on the information you enter. It does not account for adjustable-rate changes, lump-sum payments, or lender-specific fees like origination points. Always confirm final figures with your lender.
Accuracy of Results
The calculator uses the industry-standard amortization formula and is mathematically precise. Small differences (ยฑ a few dollars) may occur compared to a lender’s final quote due to rounding and escrow calculations.
Security and Privacy
We take your privacy seriously. All calculations are performed entirely in your browser. No personal data, loan details, or financial information is ever sent to our servers, stored, or shared. The tool works even when you’re offline after the page loads.
Mobile-Friendly Design
The entire page is fully responsive. You can use the mortgage calculator on your smartphone, tablet, or desktop with the same intuitive experience. All inputs, buttons, and the amortization table adapt seamlessly to any screen size.
Frequently Asked Questions
How accurate is the monthly payment estimate?
The calculation follows the standard amortization formula and is precise to the cent. Actual lender payments may vary slightly due to rounding and escrow.
What does PITI include?
PITI stands for Principal, Interest, Taxes, and Insurance โ the four main components of most monthly mortgage payments.
Can I calculate the effect of extra payments?
Yes. Add any fixed extra amount per month and the tool instantly shows the new payoff date and total interest saved.
Does the calculator support adjustable-rate mortgages?
Currently it models fixed-rate loans. For an ARM estimate, use the initial rate, but remember the payment may change later.
Is my financial data safe?
Absolutely. All calculations are performed locally in your browser. No data is ever sent to a server or stored.
Can I print or save the amortization schedule?
Yes, you can print the table directly or copy it into a spreadsheet. For a polished PDF, try our free PDF Master Tool.
Related Mortgage & Finance Calculators
Conclusion: Plan Smarter, Borrow Confidently
A mortgage is a decades-long commitment, and small differences in rate, term, or down payment can add up to tens of thousands of dollars over the life of the loan. This calculator puts that math in your hands โ free, private, and instant โ so you can compare scenarios, test extra payments, and walk into a lender’s office already knowing what to expect. Run a few numbers now, and revisit the tool anytime your rate, budget, or plans change.
Ready to Crunch the Numbers?
Take control of your home financing now โ free, private, and instant.