Epoxy Floor Coating Coverage Calculator
ANA›Life Services Authority›National Calculator Authority›Epoxy Floor Coating Coverage 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; } }
Epoxy Floor Coating Coverage Calculator
Estimate the amount of epoxy floor coating needed based on your floor dimensions, number of coats, and product spread rate.
Floor Length (ft)
Floor Width (ft)
Number of Coats
Product Spread Rate (sq ft / gallon)
Waste / Overlap Factor (%)
Calculate
function epoCalc() { var length = parseFloat(document.getElementById('epo-length').value); var width = parseFloat(document.getElementById('epo-width').value); var coats = parseFloat(document.getElementById('epo-coats').value); var spread = parseFloat(document.getElementById('epo-spread').value); var waste = parseFloat(document.getElementById('epo-waste').value);
var errors = []; if (isNaN(length) || length 50) errors.push("Waste Factor must be between 0 and 50 %.");
var resultDiv = document.getElementById('epo-result'); if (errors.length > 0) { resultDiv.innerHTML = ''; return; }
// Core calculations var floorArea = length * width; // sq ft var wasteFactor = 1 + (waste / 100); // multiplier var totalAreaNeeded = floorArea * coats * wasteFactor; // sq ft (all coats + waste) var gallonsNeeded = totalAreaNeeded / spread; // gallons var gallonsPerCoat = (floorArea * wasteFactor) / spread; // gallons per single coat var quartsNeeded = gallonsNeeded * 4; // quarts var litersNeeded = gallonsNeeded * 3.78541; // liters
// Suggest whole-gallon purchase quantity var gallonsPurchase = Math.ceil(gallonsNeeded);
resultDiv.innerHTML = '### Results ' + '' + 'Floor Area' + floorArea.toFixed(2) + ' sq ft' + 'Total Coated Area (with waste)' + totalAreaNeeded.toFixed(2) + ' sq ft' + 'Epoxy Needed per Coat' + gallonsPerCoat.toFixed(3) + ' gal' + 'Total Epoxy Needed' + gallonsNeeded.toFixed(3) + ' gal (' + quartsNeeded.toFixed(2) + ' qt / ' + litersNeeded.toFixed(2) + ' L)' + 'Recommended Purchase Quantity' + gallonsPurchase + ' gallon(s)' + ''; }
#### Formula
Floor Area = Length × Width
Waste Factor = 1 + (Waste % ÷ 100)
Total Area Needed = Floor Area × Number of Coats × Waste Factor
Gallons Needed = Total Area Needed ÷ Spread Rate (sq ft/gal)
Recommended Purchase = ⌈ Gallons Needed ⌉ (rounded up to nearest whole gallon)
#### Assumptions & References
- Default spread rate of 250 sq ft/gallon is typical for most water-based and solvent-based epoxy floor coatings (manufacturer average; verify your product's data sheet).
- A 10% waste factor is recommended to account for edges, corners, surface porosity, and minor spills.
- Reference: The Concrete Network – Epoxy Floor Coatings; typical product TDS sheets from Rust-Oleum, Sherwin-Williams, and ArmorPoxy.
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