{
  "id": "paint-calculator",
  "version": "1.0.0",
  "name": "Paint Calculator",
  "shortName": "Paint",
  "description": "Estimate paint quantity from wall area, openings, coats, coverage, and waste allowance.",
  "category": "Home & Construction",
  "categorySlug": "home-construction",
  "keywords": [
    "paint",
    "calculator",
    "paint calculator"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/paint-calculator.json",
    "qualifiedReview": "pending",
    "qualifiedReviewer": null,
    "qualifiedReviewDate": null,
    "formulaVersion": "1.0.0",
    "referenceCoverage": "references-pending",
    "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
    "historicalMetadataDate": "2026-09-01",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "notice": "This is a planning estimate. Product coverage and surface conditions can materially change actual paint use.",
  "urls": {
    "page": "/calculator/paint-calculator/",
    "definition": "/calculator/paint-calculator/definition.json",
    "schema": "/calculator/paint-calculator/schema.json",
    "llms": "/calculator/paint-calculator/llms.txt",
    "legacyDefinition": "/calculator/paint-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/paint-calculator/?roomLength=15&roomWidth=12&wallHeight=8&openingsArea=40&coats=2&coverage=350&wastePercent=10",
  "queryParameters": {
    "roomLength": {
      "label": "Room length",
      "type": "number",
      "required": true,
      "default": 15
    },
    "roomWidth": {
      "label": "Room width",
      "type": "number",
      "required": true,
      "default": 12
    },
    "wallHeight": {
      "label": "Wall height",
      "type": "number",
      "required": true,
      "default": 8
    },
    "openingsArea": {
      "label": "Doors and windows area",
      "type": "number",
      "required": true,
      "default": 40
    },
    "coats": {
      "label": "Number of coats",
      "type": "number",
      "required": true,
      "default": 2
    },
    "coverage": {
      "label": "Coverage per gallon (ft²)",
      "type": "number",
      "required": true,
      "default": 350
    },
    "wastePercent": {
      "label": "Waste allowance",
      "type": "number",
      "required": true,
      "default": 10
    }
  },
  "inputs": [
    {
      "id": "roomLength",
      "label": "Room length",
      "type": "number",
      "required": true,
      "defaultValue": 15,
      "min": 0,
      "step": 0.01
    },
    {
      "id": "roomWidth",
      "label": "Room width",
      "type": "number",
      "required": true,
      "defaultValue": 12,
      "min": 0,
      "step": 0.01
    },
    {
      "id": "wallHeight",
      "label": "Wall height",
      "type": "number",
      "required": true,
      "defaultValue": 8,
      "min": 0,
      "step": 0.01
    },
    {
      "id": "openingsArea",
      "label": "Doors and windows area",
      "type": "number",
      "required": true,
      "defaultValue": 40,
      "min": 0,
      "step": 0.01
    },
    {
      "id": "coats",
      "label": "Number of coats",
      "type": "number",
      "required": true,
      "defaultValue": 2,
      "min": 1,
      "step": 1
    },
    {
      "id": "coverage",
      "label": "Coverage per gallon (ft²)",
      "type": "number",
      "required": true,
      "defaultValue": 350,
      "min": 0.000001,
      "step": 1
    },
    {
      "id": "wastePercent",
      "label": "Waste allowance",
      "type": "number",
      "required": true,
      "defaultValue": 10,
      "min": 0,
      "max": 100,
      "step": 0.1,
      "suffix": "%"
    }
  ],
  "outputs": [
    {
      "id": "gallons",
      "label": "Paint required (gallons)",
      "format": "number",
      "primary": true,
      "digits": 2
    },
    {
      "id": "gallonsToBuy",
      "label": "Whole gallons to buy",
      "format": "integer"
    },
    {
      "id": "paintArea",
      "label": "Coated area (ft²)",
      "format": "number",
      "digits": 2
    },
    {
      "id": "netWallArea",
      "label": "Net wall area (ft²)",
      "format": "number",
      "digits": 2
    }
  ],
  "formula": {
    "expression": "paint = [perimeter × height − openings] × coats × (1 + waste%) ÷ coverage"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "roomLength": 15,
        "roomWidth": 12,
        "wallHeight": 8,
        "openingsArea": 40,
        "coats": 2,
        "coverage": 350,
        "wastePercent": 10
      }
    }
  ],
  "sources": []
}