{
  "slug": "5x8-bathroom-tile-calculator",
  "title": "5x8 Bathroom Tile Calculator",
  "heading": "5x8 Bathroom Tile Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/5x8-bathroom-tile-calculator",
  "summary": "Tile boxes and cost for a standard 5x8 bathroom floor, pre-filled and editable.",
  "description": "A 5x8 bathroom is one of the most common floor plans in North American homes, so this calculator starts with that 40-square-foot footprint and lets you adjust tile size, waste factor, and box coverage to get an accurate shopping list. It converts the floor area into the number of tile boxes you need to buy (always rounding up, since partial boxes aren't sold) and estimates total material cost so you know what to budget before heading to the store.",
  "formula": "Area = Length × Width × (1 + Waste%). Boxes = CEILING(Area ÷ Sqft per Box). Cost = Boxes × Price per Box.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=5x8-bathroom-tile-calculator",
  "inputs": [
    {
      "id": "length",
      "label": "Room length",
      "kind": "number",
      "hint": null,
      "default": 8,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "width",
      "label": "Room width",
      "kind": "number",
      "hint": null,
      "default": 5,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "waste",
      "label": "Waste factor",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "%",
      "min": 0,
      "max": 30
    },
    {
      "id": "sqftPerBox",
      "label": "Coverage per box",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "sqft",
      "min": 1,
      "max": null
    },
    {
      "id": "pricePerBox",
      "label": "Price per box",
      "kind": "number",
      "hint": null,
      "default": 35,
      "unit": "$",
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "boxes",
      "label": "Tile boxes to buy",
      "format": "number",
      "hint": null,
      "primary": true
    },
    {
      "id": "cost",
      "label": "Estimated tile cost",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "area",
      "label": "Floor area",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "adjustedArea",
      "label": "Area with waste",
      "format": "decimal",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Room length: 8 ft",
      "Room width: 5 ft",
      "Waste factor: 10 %",
      "Coverage per box: 10 sqft",
      "Price per box: 35 $"
    ],
    "outputs": [
      "Tile boxes to buy: 5",
      "Estimated tile cost: $175",
      "Floor area: 40",
      "Area with waste: 44"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter room length (ft).",
      "Enter room width (ft).",
      "Enter waste factor (%).",
      "Enter coverage per box (sqft).",
      "Enter price per box ($).",
      "Read your tile boxes to buy 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": 4.8,
        "width": 3,
        "waste": 6,
        "sqftPerBox": 6,
        "pricePerBox": 21
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "length": 8,
        "width": 5,
        "waste": 10,
        "sqftPerBox": 10,
        "pricePerBox": 35
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "length": 12.8,
        "width": 8,
        "waste": 16,
        "sqftPerBox": 16,
        "pricePerBox": 56
      }
    }
  ],
  "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 much tile do I need for a 5x8 bathroom?",
      "a": "A 5x8 bathroom is 40 square feet; with a 10% waste factor you should buy enough tile to cover about 44 square feet, which usually means rounding up to the nearest full box."
    },
    {
      "q": "Why round up to full boxes instead of buying exact tile count?",
      "a": "Tile is sold in sealed boxes and most retailers won't split them, plus keeping a spare box on hand is useful for future repairs after grout or a cracked tile."
    },
    {
      "q": "Should I increase the waste factor for diagonal tile layouts?",
      "a": "Yes, diagonal patterns and rooms with lots of cuts around fixtures like the toilet and vanity often need 15-20% waste instead of the standard 10%."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/10x10-kitchen-cabinets-calculator",
    "https://www.revenuelab.fyi/toolbox/200-sq-ft-deck-stain-calculator"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — 5x8 Bathroom Tile Calculator (https://www.revenuelab.fyi/toolbox/5x8-bathroom-tile-calculator)"
}