Carpet Patch Size and Material Calculator
ANA›Life Services Authority›National Calculator Authority›Carpet Patch Size and Material Calculator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Carpet Patch Size and Material Calculator
Calculate the exact patch dimensions and total carpet material needed to repair a damaged area, including seam allowance and waste factor.
Damaged Area Length (inches)
Damaged Area Width (inches)
Seam Allowance per Side (inches)
Waste / Pattern Match Factor (%)
Carpet Roll Width (inches)
Carpet Cost per Square Foot (USD, optional)
Calculate
function carCalc() { var resultDiv = document.getElementById('car-result');
var damageLength = parseFloat(document.getElementById('car-damage-length').value); var damageWidth = parseFloat(document.getElementById('car-damage-width').value); var seam = parseFloat(document.getElementById('car-seam-allowance').value); var wastePct = parseFloat(document.getElementById('car-waste-factor').value); var rollWidth = parseFloat(document.getElementById('car-carpet-roll-width').value); var costPerSqFt = parseFloat(document.getElementById('car-cost-per-sqft').value);
// Validation if (isNaN(damageLength) || damageLength Please enter a valid Damaged Area Length greater than 0.'; return; } if (isNaN(damageWidth) || damageWidth Please enter a valid Damaged Area Width greater than 0.'; return; } if (isNaN(seam) || seam Seam Allowance must be 0 or greater.'; return; } if (isNaN(wastePct) || wastePct 100) { resultDiv.innerHTML = 'Waste Factor must be between 0 and 100.'; return; } if (isNaN(rollWidth) || rollWidth Please enter a valid Carpet Roll Width greater than 0.'; return; }
// --- Core Formulas --- // Patch dimensions (add seam allowance on both sides) var patchLength = damageLength + 2 * seam; // inches var patchWidth = damageWidth + 2 * seam; // inches
// Patch area in square inches, then convert to sq ft var patchAreaSqIn = patchLength * patchWidth; var patchAreaSqFt = patchAreaSqIn / 144;
// Total material needed with waste factor // totalMaterial = patchArea * (1 + wastePct / 100) var totalMaterialSqFt = patchAreaSqFt * (1 + wastePct / 100); var totalMaterialSqIn = totalMaterialSqFt * 144;
// Length of carpet strip needed from roll // stripLength = totalMaterialSqIn / rollWidth (inches) var stripLengthIn = totalMaterialSqIn / rollWidth; var stripLengthFt = stripLengthIn / 12;
// Cost estimate (optional) var costHTML = ''; if (!isNaN(costPerSqFt) && costPerSqFt > 0) { var totalCost = totalMaterialSqFt * costPerSqFt; costHTML = 'Estimated Material Cost$' + totalCost.toFixed(2) + ''; }
resultDiv.innerHTML = '### Results ' + '' + 'ParameterValue' + 'Patch Length (with seam)' + patchLength.toFixed(2) + ' in (' + (patchLength/12).toFixed(3) + ' ft)' + 'Patch Width (with seam)' + patchWidth.toFixed(2) + ' in (' + (patchWidth/12).toFixed(3) + ' ft)' + 'Patch Area' + patchAreaSqIn.toFixed(2) + ' in² (' + patchAreaSqFt.toFixed(3) + ' ft²)' + 'Total Material Needed (with ' + wastePct + '% waste)' + totalMaterialSqFt.toFixed(3) + ' ft² (' + totalMaterialSqIn.toFixed(2) + ' in²)' + 'Strip Length from Roll (' + rollWidth + '" wide)' + stripLengthIn.toFixed(2) + ' in (' + stripLengthFt.toFixed(3) + ' ft)' + costHTML + ''; }
#### Formulas Used
Patch Dimensions:
Patch Area:
Total Material with Waste:
Strip Length from Roll:
Cost Estimate (optional):
#### Assumptions & References
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