Square Footage Calculator with Inches
:root {
–primary-blue: #004a99;
–success-green: #28a745;
–light-background: #f8f9fa;
–white: #ffffff;
–dark-text: #333333;
–border-color: #cccccc;
}
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
line-height: 1.6;
color: var(–dark-text);
background-color: var(–light-background);
margin: 0;
padding: 20px;
display: flex;
justify-content: center;
align-items: flex-start;
min-height: 100vh;
}
.loan-calc-container {
background-color: var(–white);
border-radius: 8px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
padding: 30px;
width: 100%;
max-width: 700px;
box-sizing: border-box;
}
h1, h2 {
color: var(–primary-blue);
text-align: center;
margin-bottom: 25px;
}
.input-group {
margin-bottom: 20px;
display: flex;
flex-wrap: wrap;
align-items: center;
gap: 15px;
}
.input-group label {
flex: 1 1 150px; /* Grow, shrink, basis */
font-weight: 500;
color: var(–dark-text);
margin-bottom: 5px;
}
.input-group input[type="number"],
.input-group select {
flex: 1 1 180px; /* Grow, shrink, basis */
padding: 10px 12px;
border: 1px solid var(–border-color);
border-radius: 4px;
font-size: 1rem;
color: var(–dark-text);
background-color: var(–white);
box-sizing: border-box;
}
.input-group input[type="number"]:focus,
.input-group select:focus {
outline: none;
border-color: var(–primary-blue);
box-shadow: 0 0 0 3px rgba(0, 74, 153, 0.2);
}
button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: var(–primary-blue);
color: var(–white);
border: none;
border-radius: 4px;
font-size: 1.1rem;
font-weight: 500;
cursor: pointer;
transition: background-color 0.3s ease;
margin-top: 20px;
}
button:hover {
background-color: #003366;
}
#result {
margin-top: 30px;
padding: 20px;
background-color: var(–success-green);
color: var(–white);
text-align: center;
border-radius: 4px;
font-size: 1.4rem;
font-weight: bold;
min-height: 60px;
display: flex;
justify-content: center;
align-items: center;
box-shadow: inset 0 2px 5px rgba(0,0,0,0.1);
}
.calculation-explanation {
margin-top: 40px;
padding: 25px;
background-color: var(–white);
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
.calculation-explanation h2 {
color: var(–primary-blue);
text-align: left;
margin-bottom: 20px;
}
.calculation-explanation p,
.calculation-explanation ul,
.calculation-explanation li {
margin-bottom: 15px;
}
.calculation-explanation li {
list-style-type: disc;
margin-left: 25px;
}
.calculation-explanation strong {
color: var(–primary-blue);
}
/* Responsive adjustments */
@media (max-width: 600px) {
.loan-calc-container {
padding: 20px;
}
.input-group {
flex-direction: column;
align-items: stretch;
}
.input-group label,
.input-group input[type="number"],
.input-group select {
flex: none;
width: 100%;
}
h1 {
font-size: 1.8rem;
}
#result {
font-size: 1.2rem;
}
}
Square Footage Calculator with Inches
Understanding Square Footage Calculation with Inches
Calculating square footage is fundamental for many real-world applications, from home renovation projects and real estate to flooring installation and painting. While dimensions are often given in whole feet, it's common to encounter measurements that include inches. This calculator helps you accurately convert these measurements into square footage.
How it Works:
The process involves converting all measurements to a single unit (feet in this case) before multiplying length by width.
- Convert Inches to Feet: Since there are 12 inches in a foot, any measurement in inches is divided by 12 to convert it to its decimal foot equivalent. For example, 6 inches is 6/12 = 0.5 feet.
- Calculate Total Length and Width: The feet part of the dimension is added to the converted inch part. For instance, 10 feet and 6 inches becomes 10 + (6/12) = 10.5 feet. Similarly, 8 feet and 3 inches becomes 8 + (3/12) = 8.25 feet.
- Calculate Square Footage: Finally, the total length in feet is multiplied by the total width in feet. Using the example above, the square footage would be 10.5 feet * 8.25 feet = 86.625 square feet.
The Formula:
Square Footage = (Length in Feet + Length in Inches / 12) * (Width in Feet + Width in Inches / 12)
Use Cases:
Accurate square footage calculation is crucial for:
- Home Improvement: Estimating the amount of paint, flooring (carpet, tile, wood), wallpaper, or drywall needed for a room.
- Real Estate: Determining the size of properties, rooms, or commercial spaces.
- Landscaping: Planning garden beds, patios, or lawns.
- Construction: Budgeting materials for walls, foundations, or roofing.
Using this calculator ensures you account for fractional measurements, leading to more precise material ordering and cost estimations.
function calculateSquareFootage() {
var lengthFeet = parseFloat(document.getElementById("lengthFeet").value);
var lengthInches = parseFloat(document.getElementById("lengthInches").value);
var widthFeet = parseFloat(document.getElementById("widthFeet").value);
var widthInches = parseFloat(document.getElementById("widthInches").value);
var resultDiv = document.getElementById("result");
// Input validation
if (isNaN(lengthFeet) || isNaN(lengthInches) || isNaN(widthFeet) || isNaN(widthInches) ||
lengthFeet < 0 || lengthInches < 0 || widthFeet < 0 || widthInches 11.99 || widthInches > 11.99) {
resultDiv.innerHTML = "Please enter valid positive numbers for all dimensions, with inches between 0 and 11.99.";
resultDiv.style.backgroundColor = "#ffc107"; // Warning yellow
return;
}
// Convert inches to feet
var totalLength = lengthFeet + (lengthInches / 12);
var totalWidth = widthFeet + (widthInches / 12);
// Calculate square footage
var squareFootage = totalLength * totalWidth;
// Display the result
resultDiv.innerHTML = "Square Footage: " + squareFootage.toFixed(3) + " sq ft";
resultDiv.style.backgroundColor = "var(–success-green)"; // Reset to success green
}