{
  "slug": "concrete-slab-10x10-calculator",
  "title": "10x10 Concrete Slab Calculator",
  "heading": "10x10 Concrete Slab Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/concrete-slab-10x10-calculator",
  "summary": "Ready-mix yards and bag counts specifically for a 100 sq ft slab like a shed pad or patio.",
  "description": "A 10x10 slab is one of the most commonly poured concrete pads — sized right for a storage shed, a small patio, or an AC condenser pad — and the fixed 100 square foot footprint makes it worth having dedicated math rather than re-deriving cubic yards every time. This calculator locks in the 10-foot by 10-foot footprint and lets you adjust only the thickness (4 inches is standard for sheds and patios, 5-6 inches if it'll see vehicle weight) and waste factor, then returns both the ready-mix cubic yards to order and the equivalent 80lb bag count if you're hand-mixing instead. Because the area is fixed at 100 square feet, the only variable driving total volume is thickness, so this tool doubles as a quick reference: every extra inch of slab thickness adds roughly 0.31 cubic yards across the full 10x10 footprint. That's useful when deciding whether to upgrade from a 4-inch to a 5-inch slab for a heavier shed or small vehicle, since the incremental concrete cost is easy to see instantly.",
  "formula": "Volume = 100 sq ft × Thickness(ft) ÷ 27 cu ft/yd, × (1 + Waste%). Bags = (100 × Thickness(ft) ÷ 0.6) × (1 + Waste%).",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=concrete-slab-10x10-calculator",
  "inputs": [
    {
      "id": "thicknessIn",
      "label": "Slab thickness",
      "kind": "number",
      "hint": null,
      "default": 4,
      "unit": "in",
      "min": 3,
      "max": 8
    },
    {
      "id": "wastePct",
      "label": "Waste factor",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "%",
      "min": 0,
      "max": 25
    }
  ],
  "outputs": [
    {
      "id": "cubicYards",
      "label": "Ready-mix needed",
      "format": "decimal",
      "hint": "cu yd",
      "primary": true
    },
    {
      "id": "bags80",
      "label": "Equivalent 80lb bags",
      "format": "number",
      "hint": null,
      "primary": false
    },
    {
      "id": "cubicFeet",
      "label": "Total cubic feet",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "area",
      "label": "Slab area",
      "format": "number",
      "hint": "sq ft",
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Slab thickness: 4 in",
      "Waste factor: 10 %"
    ],
    "outputs": [
      "Ready-mix needed: 1.36",
      "Equivalent 80lb bags: 62",
      "Total cubic feet: 33.3",
      "Slab area: 100"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter slab thickness (in).",
      "Enter waste factor (%).",
      "Read your ready-mix 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": {
        "thicknessIn": 3,
        "wastePct": 6
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "thicknessIn": 4,
        "wastePct": 10
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "thicknessIn": 6.4,
        "wastePct": 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 much concrete does a standard 10x10 slab need?",
      "a": "At the common 4-inch thickness, a 10x10 slab needs about 1.36 cubic yards before waste, which most orders round up to a 1.5 cubic yard minimum load or roughly 63 bags of 80lb mix."
    },
    {
      "q": "Should a 10x10 shed pad be 4 or 6 inches thick?",
      "a": "4 inches is standard for a garden shed with no vehicle traffic; go to 5-6 inches with wire mesh or rebar reinforcement if the pad will ever support a car, riding mower storage with regular driving on/off, or a heavier structure."
    },
    {
      "q": "Do I need rebar or wire mesh in a 10x10 slab?",
      "a": "For shed and patio pads, welded wire mesh is common and helps control cracking; rebar is typically reserved for slabs bearing structural load or vehicle weight, but either adds meaningful crack resistance for a modest material cost."
    },
    {
      "q": "How many cubic yards is the typical delivery minimum?",
      "a": "Most ready-mix suppliers set a 1 to 3 cubic yard minimum before charging a short-load fee, so a 10x10 slab at 4-5 inches usually clears the minimum on its own without extra fees."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/concrete-cubic-yards-calculator",
    "https://www.revenuelab.fyi/toolbox/concrete-slab-12x12-calculator",
    "https://www.revenuelab.fyi/toolbox/concrete-slab-20x20-calculator"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — 10x10 Concrete Slab Calculator (https://www.revenuelab.fyi/toolbox/concrete-slab-10x10-calculator)"
}