{
  "slug": "quilt-fabric",
  "title": "Quilt Fabric Calculator",
  "heading": "Quilt Fabric Calculator",
  "category": "other",
  "url": "https://www.revenuelab.fyi/toolbox/quilt-fabric",
  "summary": "Fabric yardage for top, backing, batting, and binding.",
  "description": "From finished quilt size and block size, get blocks needed plus yardage for backing, batting, and binding strips.",
  "formula": null,
  "dateModified": "2026-09-30",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=quilt-fabric",
  "inputs": [
    {
      "id": "width",
      "label": "Quilt width",
      "kind": "number",
      "hint": null,
      "default": 60,
      "unit": "in",
      "min": null,
      "max": null
    },
    {
      "id": "length",
      "label": "Quilt length",
      "kind": "number",
      "hint": null,
      "default": 80,
      "unit": "in",
      "min": null,
      "max": null
    },
    {
      "id": "block",
      "label": "Finished block size",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "in",
      "min": 1,
      "max": null
    },
    {
      "id": "fabricWidth",
      "label": "Fabric width",
      "kind": "number",
      "hint": null,
      "default": 42,
      "unit": "in",
      "min": null,
      "max": null
    },
    {
      "id": "bindingWidth",
      "label": "Binding strip width",
      "kind": "number",
      "hint": null,
      "default": 2.5,
      "unit": "in",
      "min": null,
      "max": null
    }
  ],
  "outputs": [
    {
      "id": "blocks",
      "label": "Blocks needed",
      "format": "number",
      "hint": null,
      "primary": true
    },
    {
      "id": "backingYards",
      "label": "Backing (yards)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "battingYards",
      "label": "Batting (yards)",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "bindingYards",
      "label": "Binding (yards)",
      "format": "decimal",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Quilt width: 60 in",
      "Quilt length: 80 in",
      "Finished block size: 10 in",
      "Fabric width: 42 in",
      "Binding strip width: 2.5 in"
    ],
    "outputs": [
      "Blocks needed: 48",
      "Backing (yards): 6",
      "Batting (yards): 2.44",
      "Binding (yards): 0.49"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter quilt width (in).",
      "Enter quilt length (in).",
      "Enter finished block size (in).",
      "Enter fabric width (in).",
      "Enter binding strip width (in).",
      "Read your blocks 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": {
        "width": 36,
        "length": 48,
        "block": 6,
        "fabricWidth": 25,
        "bindingWidth": 1.5
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "width": 60,
        "length": 80,
        "block": 10,
        "fabricWidth": 42,
        "bindingWidth": 2.5
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "width": 96,
        "length": 128,
        "block": 16,
        "fabricWidth": 67,
        "bindingWidth": 4
      }
    }
  ],
  "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 quilt fabric calculator work?",
      "a": "From finished quilt size and block size, get blocks needed plus yardage for backing, batting, and binding strips."
    },
    {
      "q": "What do I need to enter?",
      "a": "5 values: quilt width, quilt length, finished block size, fabric width, and binding strip width. 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 blocks needed result mean?",
      "a": "It is returned as a whole 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/knitting-yarn-yardage"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Quilt Fabric Calculator (https://www.revenuelab.fyi/toolbox/quilt-fabric)"
}