{
  "slug": "1500-sq-ft-roof-shingles-calculator",
  "title": "1500 Sq Ft Roof Shingles Calculator",
  "heading": "1500 Sq Ft Roof Shingles Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/1500-sq-ft-roof-shingles-calculator",
  "summary": "Squares of shingles, bundles, and cost for a 1500 sq ft roof, pre-filled.",
  "description": "Roofers measure shingle coverage in 'squares,' where one square covers 100 square feet, and each square typically requires 3 bundles. This calculator defaults to a 1500 square foot roof area, applies a waste factor for cuts around ridges and valleys, and returns the squares, bundles, and total shingle cost you'll need to order.",
  "formula": "Adjusted Area = Roof Area × (1 + Waste%). Squares = Adjusted Area ÷ 100. Bundles = Squares × 3. Cost = Squares × Price per Square.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=1500-sq-ft-roof-shingles-calculator",
  "inputs": [
    {
      "id": "roofArea",
      "label": "Roof area",
      "kind": "number",
      "hint": null,
      "default": 1500,
      "unit": "sqft",
      "min": 100,
      "max": null
    },
    {
      "id": "waste",
      "label": "Waste factor",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "%",
      "min": 0,
      "max": 30
    },
    {
      "id": "pricePerSquare",
      "label": "Price per square",
      "kind": "number",
      "hint": null,
      "default": 400,
      "unit": "$",
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "squares",
      "label": "Roofing squares needed",
      "format": "decimal",
      "hint": null,
      "primary": true
    },
    {
      "id": "bundles",
      "label": "Shingle bundles",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "cost",
      "label": "Estimated shingle cost",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "adjustedArea",
      "label": "Area with waste",
      "format": "decimal",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Roof area: 1500 sqft",
      "Waste factor: 10 %",
      "Price per square: 400 $"
    ],
    "outputs": [
      "Roofing squares needed: 16.5",
      "Shingle bundles: 50",
      "Estimated shingle cost: $6,600",
      "Area with waste: 1,650"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter roof area (sqft).",
      "Enter waste factor (%).",
      "Enter price per square ($).",
      "Read your roofing squares needed on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "roofArea": 900,
        "waste": 6,
        "pricePerSquare": 240
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "roofArea": 1500,
        "waste": 10,
        "pricePerSquare": 400
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "roofArea": 2400,
        "waste": 16,
        "pricePerSquare": 640
      }
    }
  ],
  "limitations": [
    "Estimates assume standard, average conditions — local rules, pricing, and materials vary.",
    "Results are rounded for readability; add a buffer before ordering, booking, or committing.",
    "Double-check anything with a real cost attached against a local quote."
  ],
  "faq": [
    {
      "q": "How many squares of shingles for a 1500 sq ft roof?",
      "a": "With a 10% waste factor, about 16.5 squares, which rounds up to roughly 50 bundles since each square needs 3 bundles."
    },
    {
      "q": "Why is roof area different from the home's floor area?",
      "a": "Roof pitch adds surface area beyond the flat footprint — a steep roof can have 20-40% more surface than the home's floor plan, so measure the actual roof area or use a pitch multiplier."
    },
    {
      "q": "Should I increase waste for a complex roof?",
      "a": "Yes, roofs with many valleys, dormers, or hips need more cutting and should use 15-20% waste instead of the standard 10% for a simple gable roof."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/2000-sq-ft-roof-shingles-calculator"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — 1500 Sq Ft Roof Shingles Calculator (https://www.revenuelab.fyi/toolbox/1500-sq-ft-roof-shingles-calculator)"
}