{
  "tool": "sofa-fit",
  "version": "1.0.0",
  "inputs": {
    "door_width_cm": 74,
    "door_height_cm": 198,
    "hall_width_cm": 100,
    "route": "turn",
    "sofa_width_cm": 180,
    "sofa_depth_cm": 86,
    "sofa_height_cm": 80,
    "sofa_diagonal_cm": 72
  },
  "answer": {
    "verdict": "tight",
    "door": {
      "how": "tipped",
      "clear_cm": 2,
      "grade": "tight"
    },
    "turn": {
      "how": "end",
      "clear_cm": 18,
      "grade": "ok"
    },
    "checks": {
      "straight": {
        "clear_cm": -6,
        "grade": "no"
      },
      "tipped": {
        "clear_cm": 2,
        "grade": "tight"
      },
      "on_end": {
        "clear_cm": 18,
        "grade": "ok"
      },
      "swing": {
        "clear_cm": -80,
        "grade": "no"
      }
    },
    "end_across_cm": 80,
    "end_across": "height",
    "margin_cm": 5,
    "size_varies_pct": 5
  },
  "summary": "By these measurements a 180 cm sofa is a tight fit through a 74 × 198 cm door: carry it tipped back, its 72 cm diagonal depth across the door, then stood on end to turn, its 180 cm length under the door height. Under 5 cm to spare counts as tight.",
  "working": [
    "Straight through: height 80 cm across the 74 cm door (and 86 cm under its 198 cm height): 6 cm too big.",
    "Tipped back: diagonal depth 72 cm across the door: 2 cm to spare.",
    "Stood on end: length 180 cm under the 198 cm door height: 18 cm to spare.",
    "Swung round: length 180 cm across the 100 cm hall: 80 cm too big."
  ],
  "notes": [
    "Sofas can differ from their listed size by about 5%, so check the next door on the way too."
  ],
  "sources": [
    {
      "label": "Darlings of Chelsea, Sofa fit guide (PDF)",
      "url": "https://www.darlingsofchelsea.co.uk/static/Darlings-of-Chelsea-Will-it-Fit-Guide.pdf",
      "checked": "2026-10-31"
    },
    {
      "label": "Furniture Choice, How to measure a sofa",
      "url": "https://www.furniturechoice.co.uk/inspiration/how-to-measure-a-sofa/",
      "checked": "2026-10-31"
    }
  ],
  "page_url": "https://snuug.app/tools/sofa-fit",
  "snuug": "Snuug is an iPhone app that rebuilds your room in 3D, to within about 3% of its real size, so you can redesign it and see what fits before you buy a thing. Not yet on the App Store (31 October 2026)."
}