{
    "name": "Ceiling Panel Count Calculator",
    "url": "https://calculators.geekmidst.com/calculators/ceiling-panel-count-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/ceiling-panel-count-calculator.md",
    "category": "Construction",
    "description": "Count the suspended-ceiling tiles a room needs from its size and the tile size, with a waste allowance, the number of boxes and wall angle lengths.",
    "summary": "Count the tiles across and along the room, rounding each up because cut tiles at the edges still use a whole tile, then add the wall angle around the perimeter.",
    "also_called": [
        "Ceiling tile calculator",
        "Drop ceiling calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "room_length",
            "label": "Room length",
            "type": "number",
            "default": "6",
            "unit": "m"
        },
        {
            "name": "room_width",
            "label": "Room width",
            "type": "number",
            "default": "4",
            "unit": "m"
        },
        {
            "name": "panel_length",
            "label": "Tile length (along the room)",
            "type": "number",
            "default": "600",
            "unit": "mm"
        },
        {
            "name": "panel_width",
            "label": "Tile width",
            "type": "number",
            "default": "600",
            "unit": "mm"
        },
        {
            "name": "waste",
            "label": "Waste allowance",
            "type": "number",
            "default": "5",
            "unit": "%"
        },
        {
            "name": "per_box",
            "label": "Tiles per box",
            "type": "number",
            "default": "16"
        },
        {
            "name": "angle_length",
            "label": "Wall angle length",
            "type": "number",
            "default": "3",
            "unit": "m"
        }
    ],
    "outputs": [
        {
            "key": "panels",
            "label": "Tiles to buy",
            "format": "integer"
        },
        {
            "key": "grid",
            "label": "Layout (along × across)",
            "format": "text"
        },
        {
            "key": "boxes",
            "label": "Boxes",
            "format": "integer"
        },
        {
            "key": "ceiling_area",
            "label": "Ceiling area",
            "format": "number"
        },
        {
            "key": "perimeter",
            "label": "Perimeter",
            "format": "number"
        },
        {
            "key": "angle_pieces",
            "label": "Wall angle pieces",
            "format": "integer"
        }
    ],
    "formula": {
        "text": "Tiles = ⌈L ÷ tile length⌉ × ⌈W ÷ tile width⌉ × (1 + waste);  Wall angle = ⌈2(L + W) × (1 + waste) ÷ piece length⌉",
        "variables": {
            "L, W": "room length and width",
            "waste": "allowance for breakage and spares"
        }
    },
    "worked_example": {
        "inputs": {
            "room_length": "6",
            "room_width": "4",
            "panel_length": "600",
            "panel_width": "600",
            "waste": "0",
            "per_box": "16",
            "angle_length": "3"
        },
        "steps": [
            "Along: 6 ÷ 0.6 = 10 tiles; across: 4 ÷ 0.6 = 6.67 → 7 tiles.",
            "Tiles = 10 × 7 = 70, which is 5 boxes of 16.",
            "Perimeter = 2 × (6 + 4) = 20 m → 7 pieces of 3 m."
        ],
        "result": "A 6 × 4 m room needs 70 tiles of 600 × 600 mm (5 boxes) and 7 lengths of 3 m wall angle."
    },
    "interpretation": "Centring the grid so border tiles are at least half a tile looks better; it can add a row in each direction, so check the setting-out before ordering.",
    "assumptions": [
        "Each cut border tile uses a whole tile."
    ],
    "limitations": [
        "Main runners, cross tees and hangers depend on the grid system and are not counted."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "How many 600 × 600 tiles per m²?",
            "answer": "Each tile is 0.36 m², so about 2.78 tiles per m² before cuts and waste."
        },
        {
            "question": "Can offcuts be reused?",
            "answer": "Rarely: the edge profile is on the factory edge, so cut pieces usually only fit at the room perimeter."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Wallpaper Roll Count Calculator",
            "url": "https://calculators.geekmidst.com/calculators/wallpaper-roll-count-calculator"
        },
        {
            "name": "Carpet Roll Quantity Calculator",
            "url": "https://calculators.geekmidst.com/calculators/carpet-roll-quantity-calculator"
        },
        {
            "name": "Material Waste Rate Calculator",
            "url": "https://calculators.geekmidst.com/calculators/material-waste-rate-calculator"
        }
    ],
    "disclaimer": "Quantities are estimates. Confirm requirements with your engineer or supplier before ordering materials.",
    "publisher": "GM¹X CalcVerse"
}