{
  "slug": "gravel-driveway",
  "title": "Gravel Driveway Calculator",
  "heading": "Gravel & Aggregate Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/gravel-driveway",
  "summary": "Cubic yards, tons, and delivered cost of gravel.",
  "description": "Crushed stone weighs about 1.4 tons per cubic yard. Driveways want at least 4 inches of base plus 2 inches of top course.",
  "formula": "Cubic yards = length × width × depth ÷ 27; tons = yards × density.",
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=gravel-driveway",
  "inputs": [
    {
      "id": "length",
      "label": "Length",
      "kind": "number",
      "hint": null,
      "default": 60,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "width",
      "label": "Width",
      "kind": "number",
      "hint": null,
      "default": 12,
      "unit": "ft",
      "min": 1,
      "max": null
    },
    {
      "id": "depth",
      "label": "Depth",
      "kind": "number",
      "hint": null,
      "default": 6,
      "unit": "in",
      "min": 1,
      "max": 24
    },
    {
      "id": "density",
      "label": "Tons per cubic yard",
      "kind": "number",
      "hint": null,
      "default": 1.4,
      "unit": null,
      "min": 0.8,
      "max": 2
    },
    {
      "id": "price",
      "label": "Price per ton delivered",
      "kind": "number",
      "hint": null,
      "default": 42,
      "unit": "$",
      "min": 0,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "tons",
      "label": "Tons of gravel",
      "format": "decimal",
      "hint": null,
      "primary": true
    },
    {
      "id": "cy",
      "label": "Cubic yards",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "cost",
      "label": "Delivered cost",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "area",
      "label": "Surface area (sq ft)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "cf",
      "label": "Cubic feet",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "loads",
      "label": "Dump truck loads (15 t)",
      "format": "number",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Length: 60 ft",
      "Width: 12 ft",
      "Depth: 6 in",
      "Tons per cubic yard: 1.4",
      "Price per ton delivered: 42 $"
    ],
    "outputs": [
      "Tons of gravel: 18.67",
      "Cubic yards: 13.33",
      "Delivered cost: $784",
      "Surface area (sq ft): 720",
      "Cubic feet: 360",
      "Dump truck loads (15 t): 2"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter length (ft).",
      "Enter width (ft).",
      "Enter depth (in).",
      "Enter tons per cubic yard.",
      "Enter price per ton delivered ($).",
      "Read your tons of gravel 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": 36,
        "width": 7,
        "depth": 3.5999999999999996,
        "density": 0.84,
        "price": 25
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "length": 60,
        "width": 12,
        "depth": 6,
        "density": 1.4,
        "price": 42
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "length": 96,
        "width": 19,
        "depth": 9.600000000000001,
        "density": 2,
        "price": 67
      }
    }
  ],
  "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 does the gravel & aggregate calculator work?",
      "a": "Crushed stone weighs about 1.4 tons per cubic yard. Driveways want at least 4 inches of base plus 2 inches of top course. The underlying maths is: Cubic yards = length × width × depth ÷ 27; tons = yards × density."
    },
    {
      "q": "What do I need to enter?",
      "a": "5 values: length, width, depth, tons per cubic yard, and price per ton delivered. Each field starts with a sensible default, so you can change one number at a time and watch the result move."
    },
    {
      "q": "What does the tons of gravel result mean?",
      "a": "It is returned as a decimal number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds."
    },
    {
      "q": "Is this calculator free, and do I need an account?",
      "a": "Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser."
    },
    {
      "q": "How accurate is the result?",
      "a": "It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary."
    },
    {
      "q": "Who is this tool for?",
      "a": "It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/concrete-slab",
    "https://www.revenuelab.fyi/toolbox/topsoil-calculator"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Gravel Driveway Calculator (https://www.revenuelab.fyi/toolbox/gravel-driveway)"
}