{
  "slug": "how-many-square-feet-is-my-room",
  "title": "How Many Square Feet Is My Room?",
  "heading": "How Many Square Feet Is My Room?",
  "category": "math",
  "url": "https://www.revenuelab.fyi/toolbox/how-many-square-feet-is-my-room",
  "summary": "A 12-foot by 15-foot room is 180 square feet.",
  "description": "Room square footage for a rectangular space is simply length multiplied by width. This calculator also handles an irregular L-shaped room by letting you add a second rectangular section and summing the two areas.",
  "formula": "Area = Length × Width. Total Area (L-shape) = Area 1 + Area 2.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=how-many-square-feet-is-my-room",
  "inputs": [
    {
      "id": "length1",
      "label": "Length (main section)",
      "kind": "number",
      "hint": null,
      "default": 12,
      "unit": "ft",
      "min": 0.1,
      "max": null
    },
    {
      "id": "width1",
      "label": "Width (main section)",
      "kind": "number",
      "hint": null,
      "default": 15,
      "unit": "ft",
      "min": 0.1,
      "max": null
    },
    {
      "id": "hasSecondSection",
      "label": "L-shaped room with second section?",
      "kind": "select",
      "hint": null,
      "default": "no",
      "options": [
        {
          "value": "no",
          "label": "No, simple rectangle"
        },
        {
          "value": "yes",
          "label": "Yes, add second section"
        }
      ]
    },
    {
      "id": "length2",
      "label": "Length (second section)",
      "kind": "number",
      "hint": null,
      "default": 5,
      "unit": "ft",
      "min": 0,
      "max": null
    },
    {
      "id": "width2",
      "label": "Width (second section)",
      "kind": "number",
      "hint": null,
      "default": 4,
      "unit": "ft",
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "totalArea",
      "label": "Total square footage",
      "format": "number",
      "hint": null,
      "primary": true
    },
    {
      "id": "area1",
      "label": "Main section area",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "area2",
      "label": "Second section area",
      "format": "number",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Length (main section): 12 ft",
      "Width (main section): 15 ft",
      "L-shaped room with second section?: No, simple rectangle",
      "Length (second section): 5 ft",
      "Width (second section): 4 ft"
    ],
    "outputs": [
      "Total square footage: 180",
      "Main section area: 180",
      "Second section area: 0"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter length (main section) (ft).",
      "Enter width (main section) (ft).",
      "Enter l-shaped room with second section?.",
      "Enter length (second section) (ft).",
      "Enter width (second section) (ft).",
      "Read your total square footage 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": {
        "length1": 7.199999999999999,
        "width1": 9,
        "hasSecondSection": "no",
        "length2": 3,
        "width2": 2.4
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "length1": 12,
        "width1": 15,
        "hasSecondSection": "no",
        "length2": 5,
        "width2": 4
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "length1": 19.200000000000003,
        "width1": 24,
        "hasSecondSection": "no",
        "length2": 8,
        "width2": 6.4
      }
    }
  ],
  "limitations": [
    "Results are rounded for display; the underlying calculation keeps full precision.",
    "Very large or very small inputs may hit floating-point limits in the browser.",
    "Inputs outside the accepted range are clamped rather than rejected."
  ],
  "faq": [
    {
      "q": "How many square feet is my room?",
      "a": "A room measuring 12 feet by 15 feet is 180 square feet (12 × 15)."
    },
    {
      "q": "How do I measure an L-shaped room?",
      "a": "Split it into two rectangles, measure each separately, calculate each area, and add them together — this calculator does that math for you when you enable the second section."
    },
    {
      "q": "Should I measure wall-to-wall or floor-to-floor?",
      "a": "For most home projects like flooring and paint, measure wall-to-wall at floor level, which represents the actual usable floor area you'll be covering or painting around."
    },
    {
      "q": "How do I convert square feet to square yards?",
      "a": "Divide square feet by 9 — a 180 sq ft room is 20 square yards, which matters for carpet since it's commonly priced and sold by the square yard."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/how-much-flooring-do-i-need",
    "https://www.revenuelab.fyi/toolbox/how-much-paint-do-i-need"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — How Many Square Feet Is My Room? (https://www.revenuelab.fyi/toolbox/how-many-square-feet-is-my-room)"
}