Home Depot Carpet Calculator

body {
font-family: ‘Segoe UI’, Tahoma, Geneva, Verdana, sans-serif;
background-color: #f8f9fa;
color: #333;
line-height: 1.6;
margin: 0;
padding: 0;
}
.loan-calc-container {
max-width: 700px;
margin: 30px auto;
padding: 30px;
background-color: #ffffff;
border-radius: 8px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}
h1, h2 {
color: #004a99;
text-align: center;
margin-bottom: 20px;
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.input-group {
margin-bottom: 18px;
display: flex;
flex-direction: column;
align-items: flex-start;
}
.input-group label {
margin-bottom: 8px;
font-weight: 600;
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}
.input-group input[type=”number”],
.input-group input[type=”text”] {
width: calc(100% – 20px);
padding: 10px;
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border-radius: 4px;
font-size: 1rem;
}
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.input-group input[type=”text”]:focus {
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margin-top: 10px;
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button:hover {
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#result {
margin-top: 30px;
padding: 20px;
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border: 1px solid #004a99;
border-radius: 5px;
text-align: center;
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margin-top: 15px;
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/* Responsive adjustments */
@media (max-width: 768px) {
.loan-calc-container, .article-section {
margin: 20px;
padding: 20px;
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h1 {
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Understanding Your Carpet Project Costs

When planning to carpet a room, it’s essential to accurately estimate the materials and labor involved. This calculator helps you approximate the total cost, considering the carpet itself, potential waste, and installation fees. Home Depot offers a variety of carpeting options, and understanding these calculations can help you budget effectively for your flooring project.

How the Calculator Works:

The calculation involves several steps to ensure a realistic estimate:

• Room Area Calculation: First, the total square footage of your room is determined by multiplying its length by its width (Area = Length × Width).
• Carpet Needed (Considering Roll Width): Carpets are typically sold in rolls of fixed widths (commonly 12 ft or 15 ft). You can’t simply buy the exact square footage needed if it doesn’t align with how the carpet is cut from the roll. The calculator determines the minimum number of strips needed from the roll to cover the room and calculates the total square footage of carpet you’ll need to purchase from the roll. This often results in some unavoidable waste, especially if the room dimensions aren’t multiples of the roll width.
• Carpet Material Cost: The cost of the carpet material is calculated based on the total square footage of carpet you must purchase from the roll and the price per square yard. Since carpet is often priced per square yard, the calculator converts the square footage needed into square yards (Square Yards = Square Feet / 9) before multiplying by the price per square yard.
• Installation Cost: This calculator factors in the cost of installation, which is usually priced per square foot. The total installation cost is the total room square footage multiplied by the installation cost per square foot.
• Total Estimated Cost: The final estimate is the sum of the carpet material cost and the total installation cost.

Key Inputs Explained:

• Room Length & Width (ft): Measure the dimensions of the space you intend to carpet in feet.
• Carpet Roll Width (ft): This is a crucial factor. Standard carpet rolls at Home Depot are often 12 feet or 15 feet wide. Knowing this helps determine how the carpet will be laid and how much you’ll need to buy. Measure the roll width if you’re unsure.
• Carpet Price per Square Yard ($): This is the retail price of the carpet material itself, typically advertised per square yard.
• Installation Cost per Square Foot ($): This is the labor cost for installing the carpet, usually charged per square foot.

Why This Matters:

Accurate estimation prevents overspending and ensures you order enough material. Factors like room shape, pattern matching for patterned carpets, and padding costs (not included in this basic calculator) can also influence the final price. Always consult with a Home Depot flooring specialist for the most precise quote, especially for complex room layouts or if you’re unsure about carpet roll widths.

This calculator provides an estimate. Actual costs may vary based on specific product selection, waste calculations, additional materials (like padding or tack strips), and contractor pricing.

function calculateCarpetCost() {
var roomLength = parseFloat(document.getElementById(“roomLength”).value);
var roomWidth = parseFloat(document.getElementById(“roomWidth”).value);
var carpetRollWidth = parseFloat(document.getElementById(“carpetRollWidth”).value);
var carpetPricePerSqYd = parseFloat(document.getElementById(“carpetPricePerSqYd”).value);
var installationCostPerSqFt = parseFloat(document.getElementById(“installationCostPerSqFt”).value);

var resultDiv = document.getElementById(“result”);
var resultValueDiv = document.getElementById(“result-value”);
var additionalInfoDiv = document.getElementById(“additional-info”);

resultValueDiv.innerText = “–“;
additionalInfoDiv.innerText = “”;
resultDiv.style.borderColor = “#004a99”; // Reset border color

// Input validation
if (isNaN(roomLength) || roomLength <= 0 ||
isNaN(roomWidth) || roomWidth <= 0 ||
isNaN(carpetRollWidth) || carpetRollWidth <= 0 ||
isNaN(carpetPricePerSqYd) || carpetPricePerSqYd < 0 ||
isNaN(installationCostPerSqFt) || installationCostPerSqFt < 0) {
resultValueDiv.innerText = "Invalid Input";
resultDiv.style.borderColor = "#dc3545";
return;
}

var roomAreaSqFt = roomLength * roomWidth;
var numStrips = 0;
var carpetSqFtToPurchase = 0;
var carpetCost = 0;
var installationCost = 0;
var totalCost = 0;
var layoutInfo = "";

// Determine how carpet strips will be laid to minimize waste
// Option 1: Lay strips along the length of the room
var stripsAlongLength = Math.ceil(roomWidth / carpetRollWidth);
var carpetNeededLengthwise = stripsAlongLength * carpetRollWidth * roomLength;

// Option 2: Lay strips along the width of the room
var stripsAlongWidth = Math.ceil(roomLength / carpetRollWidth);
var carpetNeededWidthwise = stripsAlongWidth * carpetRollWidth * roomWidth;

// Choose the orientation that requires purchasing less carpet
if (carpetNeededLengthwise carpetRollWidth AND roomWidth > carpetRollWidth.

var carpetSqYdToPurchase = carpetSqFtToPurchase / 9;
carpetCost = carpetSqYdToPurchase * carpetPricePerSqYd;
installationCost = roomAreaSqFt * installationCostPerSqFt;
totalCost = carpetCost + installationCost;

// Format results
var formattedTotalCost = totalCost.toFixed(2);
var formattedCarpetCost = carpetCost.toFixed(2);
var formattedInstallationCost = installationCost.toFixed(2);
var formattedRoomArea = roomAreaSqFt.toFixed(2);
var wasteSqFt = carpetSqFtToPurchase – roomAreaSqFt;
var wastePercentage = (wasteSqFt > 0) ? (wasteSqFt / carpetSqFtToPurchase) * 100 : 0;

resultValueDiv.innerText = “$” + formattedTotalCost;
additionalInfoDiv.innerHTML = `
Room Area: ${formattedRoomArea} sq ft
Carpet to Purchase: ${carpetSqFtToPurchase.toFixed(2)} sq ft (${layoutInfo})
Estimated Carpet Material Cost: $${formattedCarpetCost}
Estimated Installation Cost: $${formattedInstallationCost}
Estimated Waste: ${wasteSqFt.toFixed(2)} sq ft (${wastePercentage.toFixed(1)}%)
`;
resultDiv.style.borderColor = “#28a745”;
}