Concrete Slab Cost Estimator
ANA›Life Services Authority›National Calculator Authority›Concrete Slab Cost Estimator
.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; } }
Concrete Slab Cost Estimator
Estimate the total cost of pouring a concrete slab, including concrete material, labor, reinforcement, and finishing costs.
Slab Length (ft)
Slab Width (ft)
Slab Thickness (inches)
Concrete Price ($/cubic yard)
Labor Cost ($/sq ft)
Include Rebar Reinforcement?
No Yes (+$0.75/sq ft)
Finishing Type
Basic Broom Finish (included) Exposed Aggregate (+$0.50/sq ft) Stamped Concrete (+$1.50/sq ft) Polished Concrete (+$3.00/sq ft)
Waste / Overage Factor (%)
Calculate
function conCalc() { var resultDiv = document.getElementById("con-result");
var length = parseFloat(document.getElementById("con-length").value); var width = parseFloat(document.getElementById("con-width").value); var thickness = parseFloat(document.getElementById("con-thickness").value); var price = parseFloat(document.getElementById("con-price").value); var labor = parseFloat(document.getElementById("con-labor").value); var rebar = parseFloat(document.getElementById("con-rebar").value); var finish = parseFloat(document.getElementById("con-finish").value); var waste = parseFloat(document.getElementById("con-waste").value);
// Validation if (isNaN(length) || length Please enter a valid slab length greater than 0."; return; } if (isNaN(width) || width Please enter a valid slab width greater than 0."; return; } if (isNaN(thickness) || thickness 24) { resultDiv.innerHTML = "Please enter a valid thickness between 1 and 24 inches."; return; } if (isNaN(price) || price Please enter a valid concrete price per cubic yard."; return; } if (isNaN(labor) || labor Please enter a valid labor cost (0 or more)."; return; } if (isNaN(waste) || waste 50) { resultDiv.innerHTML = "Please enter a waste factor between 0% and 50%."; return; }
// --- Core Calculations ---
// Area in square feet var areaSqFt = length * width;
// Volume in cubic feet, then convert to cubic yards // thickness in inches → divide by 12 for feet var thicknessFt = thickness / 12; var volumeCuFt = areaSqFt * thicknessFt; var volumeCuYd = volumeCuFt / 27;
// Apply waste/overage factor var wasteFactor = 1 + (waste / 100); var volumeCuYdWaste = volumeCuYd * wasteFactor;
// Concrete material cost var concreteCost = volumeCuYdWaste * price;
// Labor cost var laborCost = areaSqFt * labor;
// Rebar cost (per sq ft of slab area) var rebarCost = areaSqFt * rebar;
// Finishing cost (per sq ft) var finishCost = areaSqFt * finish;
// Total cost var totalCost = concreteCost + laborCost + rebarCost + finishCost;
// Cost per square foot var costPerSqFt = totalCost / areaSqFt;
// --- Format Output --- function fmt(n) { return n.toLocaleString("en-US", {minimumFractionDigits: 2, maximumFractionDigits: 2}); } function fmtVol(n) { return n.toLocaleString("en-US", {minimumFractionDigits: 2, maximumFractionDigits: 2}); }
var rebarLabel = rebar > 0 ? "Yes" : "No"; var finishLabel = finish === 0 ? "Basic Broom" : finish === 0.50 ? "Exposed Aggregate" : finish === 1.50 ? "Stamped Concrete" : "Polished Concrete";
resultDiv.innerHTML = "### Estimation Results " + "" + "Slab Area" + fmt(areaSqFt) + " sq ft" + "Concrete Volume (no waste)" + fmtVol(volumeCuYd) + " cu yd" + "Concrete Volume (with " + waste + "% waste)" + fmtVol(volumeCuYdWaste) + " cu yd" + "" + "Concrete Material Cost$" + fmt(concreteCost) + "" + "Labor Cost$" + fmt(laborCost) + "" + "Rebar Reinforcement (" + rebarLabel + ")$" + fmt(rebarCost) + "" + "Finishing (" + finishLabel + ")$" + fmt(finishCost) + "" + "" + "" + "Total Estimated Cost$" + fmt(totalCost) + "" + "Cost per Square Foot$" + fmt(costPerSqFt) + " / sq ft" + ""; }
#### Formulas Used
Slab Area (sq ft): Area = Length × Width
Concrete Volume (cubic yards): Volume (cu yd) = (Length × Width × Thickness_in_inches / 12) / 27
Volume with Waste: Adjusted Volume = Volume × (1 + Waste% / 100)
Concrete Material Cost: Concrete Cost = Adjusted Volume (cu yd) × Price per Cubic Yard
Labor Cost: Labor Cost = Area (sq ft) × Labor Rate ($/sq ft)
Rebar Cost (if selected): Rebar Cost = Area (sq ft) × $0.75/sq ft
Finishing Cost: Finishing Cost = Area (sq ft) × Finish Rate ($/sq ft)
Total Cost: Total = Concrete Cost + Labor Cost + Rebar Cost + Finishing Cost
Cost per Square Foot: Cost/sq ft = Total Cost / Area
#### Assumptions & References
More Calculators
- Privacy Impact Assessment Score Calculator
- Cyber Incident Response Time Estimator
- Deck Footing Size and Load Calculator
- GDPR Fine Risk Estimator
- Credit Utilization Calculator
- Data Subject Rights Request Volume Calculator
- Contents Inventory Loss Calculator
- Medical Expenses Recovery Calculator
- Vehicle Diminished Value Calculator
- Personal Injury Compensation Estimator
- Auto Claim Settlement Value Estimator
Read Next
Study Time Planner Authority Network America › Life Services Authority › National Calculator Authority .calc-container { max-width: 640px;...
References
- 10 CFR § 433.8 — § 433.8 Life-cycle costing.
- Deflection Estimation Model for Prestressed Concrete Slabs with Plastic Inserts Forming Voids. — Materials (Basel) (2022 Apr 21)
- Developing low-cost house floors to control tungiasis in Kenya - a feasibility study. — BMC Public Health (2023 Dec 12)
- An economic, environmental and energy study of six innovative roofing solutions through life cycle assessment methodology. — Sci Rep (2026 Jan 27)