.calc-seo-wrapper {
font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 0 auto;
color: #333;
line-height: 1.6;
}
.calc-box {
background: #f9f9f9;
border: 1px solid #e0e0e0;
border-radius: 8px;
padding: 25px;
margin-bottom: 30px;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.calc-title {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
font-size: 24px;
font-weight: 700;
}
.calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}
@media (max-width: 600px) {
.calc-grid {
grid-template-columns: 1fr;
}
}
.input-group {
margin-bottom: 15px;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: 600;
font-size: 14px;
}
.input-group input, .input-group select {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box;
}
.calc-btn {
background-color: #0073aa;
color: white;
border: none;
padding: 12px 20px;
font-size: 18px;
font-weight: bold;
border-radius: 4px;
cursor: pointer;
width: 100%;
margin-top: 10px;
transition: background 0.3s;
}
.calc-btn:hover {
background-color: #005177;
}
.result-box {
background: #eef7fb;
border: 1px solid #cce5f0;
border-radius: 4px;
padding: 20px;
margin-top: 25px;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
margin-bottom: 10px;
font-size: 16px;
border-bottom: 1px solid #ddd;
padding-bottom: 10px;
}
.result-row:last-child {
border-bottom: none;
margin-bottom: 0;
padding-bottom: 0;
}
.result-label {
font-weight: 600;
}
.result-value {
font-weight: 700;
color: #0073aa;
}
.big-result {
font-size: 24px;
color: #27ae60;
}
.seo-content h2 {
color: #2c3e50;
margin-top: 30px;
border-bottom: 2px solid #0073aa;
padding-bottom: 10px;
font-size: 22px;
}
.seo-content p {
margin-bottom: 15px;
}
.seo-content ul {
margin-bottom: 20px;
padding-left: 20px;
}
.error-msg {
color: #d32f2f;
text-align: center;
margin-top: 10px;
display: none;
font-weight: bold;
}
function calculateMortgage() {
var homePrice = parseFloat(document.getElementById('mc-home-price').value);
var downPayment = parseFloat(document.getElementById('mc-down-payment').value);
var interestRate = parseFloat(document.getElementById('mc-interest-rate').value);
var loanTermYears = parseInt(document.getElementById('mc-loan-term').value);
var errorMsg = document.getElementById('mc-error');
var resultsDiv = document.getElementById('mc-results');
// Reset display
errorMsg.style.display = 'none';
resultsDiv.style.display = 'none';
// Validation
if (isNaN(homePrice) || isNaN(downPayment) || isNaN(interestRate) || homePrice home price
if (principal < 0) {
principal = 0;
}
var monthlyInterest = (interestRate / 100) / 12;
var numberOfPayments = loanTermYears * 12;
var monthlyPayment = 0;
// If interest rate is 0, simple division
if (interestRate === 0) {
monthlyPayment = principal / numberOfPayments;
} else {
// Standard Amortization Formula
monthlyPayment = principal *
(monthlyInterest * Math.pow(1 + monthlyInterest, numberOfPayments)) /
(Math.pow(1 + monthlyInterest, numberOfPayments) – 1);
}
var totalCost = monthlyPayment * numberOfPayments;
var totalInterest = totalCost – principal;
// Formatting currency
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
minimumFractionDigits: 2
});
// Update DOM
document.getElementById('mc-monthly-payment').innerHTML = formatter.format(monthlyPayment);
document.getElementById('mc-total-principal').innerHTML = formatter.format(principal);
document.getElementById('mc-total-interest').innerHTML = formatter.format(totalInterest);
document.getElementById('mc-total-cost').innerHTML = formatter.format(totalCost);
// Show results
resultsDiv.style.display = 'block';
}
Mortgage Payment Calculator
30 Years
20 Years
15 Years
10 Years
Please enter valid numeric values for all fields.
Monthly Principal & Interest:
–
Total Principal Paid:
–
Total Interest Paid:
–
Total Cost of Loan:
–
How to Calculate Your Mortgage Payment
Understanding your potential monthly mortgage payment is the first step in the home buying journey. This Mortgage Payment Calculator allows prospective homeowners to estimate their monthly financial obligation based on the property price, down payment, interest rate, and loan term.
The standard formula used for calculating a fixed-rate mortgage is:
M = P [ i(1 + i)^n ] / [ (1 + i)^n – 1 ]
- M = Total monthly payment
- P = Principal loan amount (Home Price minus Down Payment)
- i = Monthly interest rate (Annual Rate divided by 12)
- n = Number of payments (Loan Term in years multiplied by 12)
Factors Affecting Your Mortgage Costs
Several variables impact how much you will pay both monthly and over the life of your loan:
- Home Price: The purchase price of the property. Higher prices result in larger loans and higher payments.
- Down Payment: The upfront cash you pay. A larger down payment reduces the principal loan amount and can lower your interest rate. If you put down less than 20%, you may also have to pay Private Mortgage Insurance (PMI).
- Interest Rate: The cost of borrowing money. Even a small difference in the rate (e.g., 0.5%) can save or cost you tens of thousands of dollars over a 30-year term.
- Loan Term: The duration of the loan. A 30-year term offers lower monthly payments but results in more interest paid over time compared to a 15-year term.
Why Use a Mortgage Calculator?
Using a calculator helps you determine your budget before you start house hunting. It enables you to visualize how changes in interest rates or down payment amounts affect your long-term finances. By knowing your numbers, you can shop for homes with confidence and negotiate better loan terms.