Mortgage Calculator
Calculate your monthly mortgage payment, total interest payable, and full amortization schedule for any home loan. Enter your home price, down payment, interest rate, and loan term to get instant results with a detailed year-by-year summary. Supports USD, EUR, GBP, INR, CAD, and AUD — free, private, and no signup required.
Enter your home price, down payment, interest rate, and loan term to instantly calculate your monthly mortgage payment, total interest, and full amortization schedule. All calculations run locally in your browser — no data is sent to any server.
Total purchase price
Leave blank for 0
Fixed rate per annum
M = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1)
Where M = Monthly payment, P = Loan amount (price − down payment), r = Monthly interest rate (annual rate ÷ 12 ÷ 100), n = Loan term in months.
Why Use Our Mortgage Calculator?
Instant Mortgage Payment Calculation
Enter your home price, down payment, interest rate, and loan term to get your monthly mortgage payment, total interest, and full amortization schedule instantly. The mortgage calculator processes everything in your browser with zero loading time.
Secure Mortgage Calculator Online
The mortgage calculator runs entirely in your browser. Your home price, down payment, income, and financial details are never sent to any server — no data collection, no tracking, completely private.
Mortgage Calculator — No Installation
Use the mortgage calculator directly in any modern browser with no downloads, apps, or plugins required. Supports USD, EUR, GBP, INR, CAD, and AUD with loan terms from 1 to 50 years and any interest rate.
100% Free with Full Amortization Schedule
The mortgage calculator is completely free with no signup, no usage limits, and no ads. Get a full month-by-month amortization schedule, yearly summary table, and principal vs. interest breakdown chart — free forever.
Common Use Cases for Mortgage Calculator
First-Time Home Buyers
Use the mortgage calculator to understand exactly what monthly payment you can afford before making an offer. Enter different home prices and down payment amounts to find the right balance between purchase price and monthly budget.
Comparing Loan Terms
Run the mortgage calculator for 15-year and 30-year terms side by side to see the trade-off between lower monthly payments and total interest paid. A 15-year mortgage typically saves tens of thousands in interest over the life of the loan.
Evaluating Interest Rate Impact
Use the mortgage calculator to see how a 0.5% difference in interest rate affects your monthly payment and total cost. Even a small rate improvement can save thousands of dollars over a 30-year mortgage.
Refinancing Decisions
Homeowners use the mortgage calculator to evaluate whether refinancing makes financial sense. Enter your remaining balance as the loan amount and compare your current rate against a new rate to see the monthly savings.
Down Payment Planning
Use the mortgage calculator to determine how much your monthly payment drops for each additional dollar of down payment. This helps you decide whether to put 10%, 15%, or 20% down based on your savings and cash flow goals.
Investment Property Analysis
Real estate investors use the mortgage calculator to model financing costs for rental properties. Enter the purchase price and expected down payment to calculate the monthly debt service and compare it against projected rental income.
Understanding the Mortgage Calculator
What is a Mortgage Calculator?
A mortgage calculator is a financial tool that computes your monthly mortgage payment based on the loan amount, annual interest rate, and loan term. The loan amount is the home price minus your down payment — also called the principal. The mortgage calculator uses the standard fixed-rate amortization formula to determine the equal monthly payment that fully repays the loan over the specified term. Each payment covers both interest (charged on the remaining balance) and principal (reducing the balance). In the early years of a mortgage, most of each payment goes toward interest; as the balance decreases, a larger share goes toward principal. Our mortgage calculator shows this shift month by month in the full amortization schedule.
How Our Mortgage Calculator Works
- Enter Your Loan Details: Input the home price, down payment (optional), annual interest rate, and loan term. The mortgage calculator automatically computes the loan amount as home price minus down payment and shows the down payment percentage in real time.
- Instant Browser-Based Calculation:Click “Calculate Mortgage” and the mortgage calculator applies the standard amortization formula entirely in your browser. No data is sent to any server — your financial details stay completely private on your device.
- Review Results and Schedule: The mortgage calculator displays your monthly payment, total interest, and total payment in summary cards. Scroll down to see the payment breakdown bar, yearly summary table, and the full month-by-month amortization schedule showing principal, interest, and remaining balance for every payment.
What the Mortgage Calculator Shows
- Monthly Payment: The fixed amount you pay each month, calculated using the standard formula M = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where P is the loan amount, r is the monthly rate, and n is the number of payments.
- Total Interest: The total amount of interest paid over the full loan term — the difference between total payments and the original loan amount. This figure is often surprising and highlights the long-term cost of a mortgage.
- Yearly Summary Table: A year-by-year breakdown showing how much principal and interest you pay each year, and what your remaining balance is at the end of each year — useful for tracking equity growth.
- Full Amortization Schedule: A month-by-month table showing the opening balance, payment amount, principal portion, interest portion, and closing balance for every single payment over the life of the loan.
Important Notes About This Mortgage Calculator
This mortgage calculator computes principal and interest only. Your actual monthly housing cost will typically be higher because it also includes property taxes, homeowner's insurance, and — if your down payment is less than 20% — private mortgage insurance (PMI). These additional costs vary by location and lender and are not included in this calculation. The mortgage calculator assumes a fixed interest rate for the entire loan term. For adjustable-rate mortgages (ARMs), the payment will change when the rate adjusts. Always consult a licensed mortgage professional before making a home purchase decision.
Related Tools
Voice Recorder & Audio Extractor
Record high-quality audio from your microphone or extract audio from MP4 and WebM video files offline. 100% secure, browser-based utility.
Audio Slicer & Converter
Trim audio clips and convert between MP3, WAV format client-side - Free online audio cutter
ID3 Tag & Metadata Editor
Read and write ID3 tags, album art, artist, and track details directly to MP3 file headers - Free online ID3 tag editor
MP3 Metadata Viewer
View all ID3 tags — title, artist, album, artwork, BPM, and every embedded frame — from any MP3 file instantly in your browser - Free online MP3 metadata viewer
Frequently Asked Questions About Mortgage Calculator
A mortgage calculator is a financial tool that computes your monthly mortgage payment based on the loan amount (home price minus down payment), annual interest rate, and loan term. Our mortgage calculator also generates a full amortization schedule, yearly summary, and principal vs. interest breakdown — all running locally in your browser with no signup required.
Monthly mortgage payment is calculated using the formula M = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where P is the loan amount (principal), r is the monthly interest rate (annual rate ÷ 12 ÷ 100), and n is the total number of monthly payments. This formula produces a fixed payment that fully amortizes the loan over the specified term.
Absolutely. The mortgage calculator runs entirely in your browser. Your home price, down payment, income, and all financial details are never sent to any server, stored in a database, or tracked. Everything stays completely private on your device.
Yes — the mortgage calculator is 100% free with no signup, no account, and no usage limits. Calculate mortgage payments for any home price, interest rate, and loan term as many times as you need, completely free forever.
No. This mortgage calculator computes principal and interest only. Your actual monthly housing cost will be higher because it also includes property taxes, homeowner's insurance, and potentially private mortgage insurance (PMI) if your down payment is less than 20%. These costs vary by location and lender.
An amortization schedule is a complete table of every monthly payment over the life of a loan, showing how much of each payment goes toward principal (reducing the balance) and how much goes toward interest. In the early years of a mortgage, most of each payment is interest. As the balance decreases, the principal portion grows. The mortgage calculator generates the full schedule for every month of your loan.
A larger down payment reduces the loan amount (principal), which directly lowers your monthly payment and total interest paid. For example, on a $400,000 home at 6.5% for 30 years, a 10% down payment ($40,000) results in a loan of $360,000, while a 20% down payment ($80,000) results in a loan of $320,000 — saving roughly $200/month and tens of thousands in total interest.
A 30-year mortgage has lower monthly payments but significantly higher total interest paid over the life of the loan. A 15-year mortgage has higher monthly payments but builds equity faster and typically saves 40–60% in total interest. Use the mortgage calculator to compare both terms for your specific loan amount and rate to see the exact trade-off.
Yes. To model a refinance, enter your remaining loan balance as the home price, set the down payment to zero, and enter the new interest rate and remaining term. The mortgage calculator will show your new monthly payment so you can compare it against your current payment to evaluate whether refinancing makes financial sense.