{
  "slug": "drywall-calculator",
  "title": "Drywall Calculator",
  "heading": "Drywall Sheet, Mud & Screw Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/drywall-calculator",
  "summary": "Sheets, joint compound, tape, and screws for a room.",
  "description": "Sheet count is wall and ceiling area divided by sheet size, plus waste for cutouts. Budget roughly one gallon of compound per 100 sq ft for three coats.",
  "formula": "Sheets = (wall + ceiling area) × (1 + waste) ÷ sheet area.",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=drywall-calculator",
  "inputs": [
    {
      "id": "length",
      "label": "Room length",
      "kind": "number",
      "hint": null,
      "default": 14,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "width",
      "label": "Room width",
      "kind": "number",
      "hint": null,
      "default": 12,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "height",
      "label": "Ceiling height",
      "kind": "number",
      "hint": null,
      "default": 8,
      "unit": "ft",
      "min": 6,
      "max": null
    },
    {
      "id": "sheet",
      "label": "Sheet size",
      "kind": "number",
      "hint": null,
      "default": 32,
      "unit": "sq ft",
      "min": 24,
      "max": 64
    },
    {
      "id": "ceiling",
      "label": "Include ceiling?",
      "kind": "select",
      "hint": null,
      "default": "yes",
      "options": [
        {
          "value": "yes",
          "label": "Yes"
        },
        {
          "value": "no",
          "label": "No"
        }
      ]
    },
    {
      "id": "waste",
      "label": "Waste factor",
      "kind": "number",
      "hint": null,
      "default": 12,
      "unit": "%",
      "min": 0,
      "max": 30
    },
    {
      "id": "price",
      "label": "Price per sheet",
      "kind": "number",
      "hint": null,
      "default": 16,
      "unit": "$",
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "sheets",
      "label": "Drywall sheets",
      "format": "number",
      "hint": null,
      "primary": true
    },
    {
      "id": "cost",
      "label": "Sheet cost",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "area",
      "label": "Total area with waste (sq ft)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "mud",
      "label": "Joint compound (gallons)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "tape",
      "label": "Joint tape (linear ft)",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "screws",
      "label": "Screws",
      "format": "number",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Room length: 14 ft",
      "Room width: 12 ft",
      "Ceiling height: 8 ft",
      "Sheet size: 32 sq ft",
      "Include ceiling?: Yes",
      "Waste factor: 12 %",
      "Price per sheet: 16 $"
    ],
    "outputs": [
      "Drywall sheets: 21",
      "Sheet cost: $336",
      "Total area with waste (sq ft): 654",
      "Joint compound (gallons): 6.5",
      "Joint tape (linear ft): 458",
      "Screws: 756"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter room length (ft).",
      "Enter room width (ft).",
      "Enter ceiling height (ft).",
      "Enter sheet size (sq ft).",
      "Enter include ceiling?.",
      "Enter waste factor (%).",
      "Enter price per sheet ($).",
      "Read your drywall sheets 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": {
        "length": 8.4,
        "width": 7.199999999999999,
        "height": 8,
        "sheet": 24,
        "ceiling": "yes",
        "waste": 7,
        "price": 10
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "length": 14,
        "width": 12,
        "height": 8,
        "sheet": 32,
        "ceiling": "yes",
        "waste": 12,
        "price": 16
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "length": 22.400000000000002,
        "width": 19.200000000000003,
        "height": 8,
        "sheet": 52,
        "ceiling": "yes",
        "waste": 19,
        "price": 26
      }
    }
  ],
  "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 does the drywall sheet, mud & screw calculator work?",
      "a": "Sheet count is wall and ceiling area divided by sheet size, plus waste for cutouts. Budget roughly one gallon of compound per 100 sq ft for three coats. The underlying maths is: Sheets = (wall + ceiling area) × (1 + waste) ÷ sheet area."
    },
    {
      "q": "What do I need to enter?",
      "a": "7 values: room length, room width, ceiling height, sheet size, include ceiling?, waste factor, and price per sheet. Each field starts with a sensible default, so you can change one number at a time and watch the result move."
    },
    {
      "q": "What does the drywall sheets result mean?",
      "a": "It is returned as a whole number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds."
    },
    {
      "q": "Is this calculator free, and do I need an account?",
      "a": "Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser."
    },
    {
      "q": "How accurate is the result?",
      "a": "It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary."
    },
    {
      "q": "Who is this tool for?",
      "a": "It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/insulation-calculator",
    "https://www.revenuelab.fyi/toolbox/paint-coverage"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Drywall Calculator (https://www.revenuelab.fyi/toolbox/drywall-calculator)"
}