{
  "slug": "8x10-shed-floor-calculator",
  "title": "8x10 Shed Floor Calculator",
  "heading": "8x10 Shed Floor Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/8x10-shed-floor-calculator",
  "summary": "Joists, plywood sheets, and cost for an 8x10 shed floor.",
  "description": "An 8x10 shed floor is small enough to frame from a single delivery of lumber. This calculator defaults to 8x10 with 16-inch joist spacing and 4x8 plywood decking, returning the joist count, plywood sheet count, and total material cost.",
  "formula": "Joists = (Length ÷ Joist Spacing) + 1. Sheets = Ceil(Floor Area ÷ 32) × (1 + Waste%). Cost = Joists × Joist Price + Sheets × Sheet Price.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=8x10-shed-floor-calculator",
  "inputs": [
    {
      "id": "length",
      "label": "Floor length",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "width",
      "label": "Floor width",
      "kind": "number",
      "hint": null,
      "default": 8,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "joistSpacing",
      "label": "Joist spacing",
      "kind": "number",
      "hint": null,
      "default": 16,
      "unit": "in",
      "min": 12,
      "max": 24
    },
    {
      "id": "joistPrice",
      "label": "Price per joist",
      "kind": "number",
      "hint": null,
      "default": 14,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "sheetPrice",
      "label": "Price per 4x8 plywood sheet",
      "kind": "number",
      "hint": null,
      "default": 45,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "waste",
      "label": "Waste factor",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "%",
      "min": 0,
      "max": 30
    }
  ],
  "outputs": [
    {
      "id": "sheets",
      "label": "Plywood sheets needed",
      "format": "number",
      "hint": null,
      "primary": true
    },
    {
      "id": "joists",
      "label": "Floor joists needed",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "cost",
      "label": "Estimated material cost",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "area",
      "label": "Floor square footage",
      "format": "number",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Floor length: 10 ft",
      "Floor width: 8 ft",
      "Joist spacing: 16 in",
      "Price per joist: 14 $",
      "Price per 4x8 plywood sheet: 45 $",
      "Waste factor: 10 %"
    ],
    "outputs": [
      "Plywood sheets needed: 3",
      "Floor joists needed: 7",
      "Estimated material cost: $233",
      "Floor square footage: 80"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter floor length (ft).",
      "Enter floor width (ft).",
      "Enter joist spacing (in).",
      "Enter price per joist ($).",
      "Enter price per 4x8 plywood sheet ($).",
      "Enter waste factor (%).",
      "Read your plywood sheets 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": {
        "length": 6,
        "width": 5,
        "joistSpacing": 12,
        "joistPrice": 8,
        "sheetPrice": 27,
        "waste": 6
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "length": 10,
        "width": 8,
        "joistSpacing": 16,
        "joistPrice": 14,
        "sheetPrice": 45,
        "waste": 10
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "length": 16,
        "width": 13,
        "joistSpacing": 24,
        "joistPrice": 22,
        "sheetPrice": 72,
        "waste": 16
      }
    }
  ],
  "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 sheets of plywood for an 8x10 shed floor?",
      "a": "80 square feet divided by 32 square feet per sheet is 2.5, so with waste you typically need 3 sheets of 3/4-inch tongue-and-groove plywood."
    },
    {
      "q": "What thickness plywood is best for a shed floor?",
      "a": "3/4-inch tongue-and-groove is standard for shed and cabin floors since it resists sagging between joists better than thinner sheathing."
    },
    {
      "q": "Should the shed floor sit on skids or a concrete pad?",
      "a": "Skids (pressure-treated 4x4 or 4x6 runners) are common for portable sheds; a concrete pad is better for permanent structures. This calculator covers the wood floor system either way."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/4x8-shed-pad-concrete-calculator",
    "https://www.revenuelab.fyi/toolbox/10x12-shed-calculator"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — 8x10 Shed Floor Calculator (https://www.revenuelab.fyi/toolbox/8x10-shed-floor-calculator)"
}