{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "ikea-shelf-boards",
 "name": "IKEA shelf boards: BILLY, PAX (KOMPLEMENT) and IVAR shelf sizes and thickness",
 "kind": "modern",
 "category": "Home & kitchen",
 "group": "Household",
 "year": null,
 "question": "What size are IKEA BILLY, PAX and IVAR shelves?",
 "tags": [
  "ikea",
  "shelf",
  "billy",
  "pax",
  "komplement",
  "ivar",
  "kallax",
  "shelf board"
 ],
 "aliases": [
  "ikea shelf thickness",
  "billy shelf size",
  "billy shelf thickness",
  "komplement shelf dimensions",
  "pax shelf size",
  "pax shelf thickness",
  "ivar shelf dimensions",
  "ivar shelf thickness",
  "ikea shelf board size",
  "kallax cube inside size"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/ikea-shelf-boards/",
 "sheet_txt": "https://xemstudio.com/objects/ikea-shelf-boards/sheet.txt",
 "sheet": {
  "basis": "IKEA product pages (Measurements section), cited per shelf; hole size and pitch are not published by IKEA",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "The whole bookcase or wardrobe is not something you design around; the shelf board is. These are the boards as IKEA's product pages list them (width × depth × thickness, mm). Use them for shelf dividers, clip-on bins, under-shelf drawers, edge-clamp hooks and replacement boards.",
   "BILLY shelves are 20 mm thick; KOMPLEMENT (PAX) and IVAR shelves are 18 mm. IKEA notes the current BILLY shelf does not fit bookcases bought in spring 2014 or earlier.",
   "KOMPLEMENT widths are the frame width minus 39 mm (50 → 461, 75 → 711, 100 → 961) and depths the frame depth minus 2 or 7 mm, as listed per size.",
   "Not published by IKEA, so not drawn: shelf-pin hole diameter, hole pitch and hole rows in the side panels, the KALLAX cube interior and panel thickness. Owners report 5 mm holes on a 32 mm pitch for BILLY (see the 5 mm shelf pins page); measure your own unit once before drilling or printing a hole-pattern guide.",
   "Max load is IKEA's per-shelf figure with the load spread evenly."
  ],
  "table": {
   "columns": [
    "shelf",
    "W × D × thickness (mm)",
    "fits",
    "max load"
   ],
   "rows": [
    [
     "BILLY shelf 76×26",
     "760 × 260 × 20",
     "BILLY 80 wide, 28 deep",
     "30 kg"
    ],
    [
     "BILLY shelf 36×26",
     "360 × 260 × 20",
     "BILLY 40 wide, 28 deep",
     "14 kg"
    ],
    [
     "KOMPLEMENT shelf 50×35 (PAX)",
     "461 × 348 × 18",
     "PAX frame 50 × 35",
     "12 kg"
    ],
    [
     "KOMPLEMENT shelf 75×35 (PAX)",
     "711 × 348 × 18",
     "PAX frame 75 × 35",
     "12 kg"
    ],
    [
     "KOMPLEMENT shelf 100×35 (PAX)",
     "961 × 348 × 18",
     "PAX frame 100 × 35",
     "12 kg"
    ],
    [
     "KOMPLEMENT shelf 50×58 (PAX)",
     "461 × 573 × 18",
     "PAX frame 50 × 58",
     "20 kg"
    ],
    [
     "KOMPLEMENT shelf 75×58 (PAX)",
     "711 × 573 × 18",
     "PAX frame 75 × 58",
     "20 kg"
    ],
    [
     "KOMPLEMENT shelf 100×58 (PAX)",
     "961 × 573 × 18",
     "PAX frame 100 × 58",
     "20 kg"
    ],
    [
     "IVAR shelf 42×30",
     "420 × 300 × 18",
     "IVAR side unit 30 deep",
     "18 kg"
    ],
    [
     "IVAR shelf 83×30",
     "830 × 300 × 18",
     "IVAR side unit 30 deep",
     "35 kg"
    ],
    [
     "IVAR shelf 83×50",
     "830 × 500 × 18",
     "IVAR side unit 50 deep",
     "45 kg"
    ],
    [
     "KALLAX cube opening",
     "not published by IKEA",
     "inserts are 330 × 370 × 330 (see the KALLAX page)",
     "13 kg per shelf"
    ],
    [
     "shelf-pin hole Ø and vertical pitch (all four)",
     "not published by IKEA",
     "measure your unit once",
     "—"
    ]
   ]
  }
 },
 "sheet_text": "IKEA shelf boards: BILLY, PAX (KOMPLEMENT) and IVAR shelf sizes and thickness — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/ikea-shelf-boards/  (sheet CC BY 4.0)\nBasis: IKEA product pages (Measurements section), cited per shelf; hole size and pitch are not published by IKEA\nCatalog version: 2026-10-20\n\nSizes: see table below\n- The whole bookcase or wardrobe is not something you design around; the shelf board is. These are the boards as IKEA's product pages list them (width × depth × thickness, mm). Use them for shelf dividers, clip-on bins, under-shelf drawers, edge-clamp hooks and replacement boards.\n- BILLY shelves are 20 mm thick; KOMPLEMENT (PAX) and IVAR shelves are 18 mm. IKEA notes the current BILLY shelf does not fit bookcases bought in spring 2014 or earlier.\n- KOMPLEMENT widths are the frame width minus 39 mm (50 → 461, 75 → 711, 100 → 961) and depths the frame depth minus 2 or 7 mm, as listed per size.\n- Not published by IKEA, so not drawn: shelf-pin hole diameter, hole pitch and hole rows in the side panels, the KALLAX cube interior and panel thickness. Owners report 5 mm holes on a 32 mm pitch for BILLY (see the 5 mm shelf pins page); measure your own unit once before drilling or printing a hole-pattern guide.\n- Max load is IKEA's per-shelf figure with the load spread evenly.\n\nshelf  W × D × thickness (mm)  fits  max load\nBILLY shelf 76×26  760 × 260 × 20  BILLY 80 wide, 28 deep  30 kg\nBILLY shelf 36×26  360 × 260 × 20  BILLY 40 wide, 28 deep  14 kg\nKOMPLEMENT shelf 50×35 (PAX)  461 × 348 × 18  PAX frame 50 × 35  12 kg\nKOMPLEMENT shelf 75×35 (PAX)  711 × 348 × 18  PAX frame 75 × 35  12 kg\nKOMPLEMENT shelf 100×35 (PAX)  961 × 348 × 18  PAX frame 100 × 35  12 kg\nKOMPLEMENT shelf 50×58 (PAX)  461 × 573 × 18  PAX frame 50 × 58  20 kg\nKOMPLEMENT shelf 75×58 (PAX)  711 × 573 × 18  PAX frame 75 × 58  20 kg\nKOMPLEMENT shelf 100×58 (PAX)  961 × 573 × 18  PAX frame 100 × 58  20 kg\nIVAR shelf 42×30  420 × 300 × 18  IVAR side unit 30 deep  18 kg\nIVAR shelf 83×30  830 × 300 × 18  IVAR side unit 30 deep  35 kg\nIVAR shelf 83×50  830 × 500 × 18  IVAR side unit 50 deep  45 kg\nKALLAX cube opening  not published by IKEA  inserts are 330 × 370 × 330 (see the KALLAX page)  13 kg per shelf\nshelf-pin hole Ø and vertical pitch (all four)  not published by IKEA  measure your unit once  —\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- IKEA: BILLY shelf 76×26 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/ae/en/p/billy-shelf-white-10525272/\n- IKEA: BILLY shelf 36×26 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/ca/en/p/billy-shelf-white-70525269\n- IKEA: KOMPLEMENT shelf 50×35 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/cz/en/p/komplement-shelf-dark-grey-20509455/\n- IKEA: KOMPLEMENT shelf 75×35 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/sg/en/p/komplement-shelf-white-50277996/\n- IKEA: KOMPLEMENT shelf 100×35 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/cz/en/p/komplement-shelf-dark-grey-90509452/\n- IKEA: KOMPLEMENT shelf 50×58 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/sg/en/p/komplement-shelf-white-10277960/\n- IKEA: KOMPLEMENT shelf 75×58 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/my/en/p/komplement-shelf-grey-beige-50509048/\n- IKEA: KOMPLEMENT shelf 100×58 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/bh/en/p/komplement-shelf-grey-beige-40509039/\n- IKEA: IVAR shelf 42×30 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/ie/en/p/ivar-shelf-pine-10318159/\n- IKEA: IVAR shelf 83×30 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/ae/en/p/ivar-shelf-pine-30318163\n- IKEA: IVAR shelf 83×50 (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com/gb/en/p/ivar-shelf-pine-80318165/\n- IKEA: KALLAX shelving unit 77×77 (no interior listed) (product page, Measurements) — web — Publisher's page; dimensions are facts — https://www.ikea.com.tw/en/products/sideboards/open-shelving-units/kallax-art-70351886\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=ikea-shelf-boards\n",
 "sources": [
  {
   "publisher": "IKEA",
   "title": "BILLY shelf 76×26 (product page, Measurements)",
   "url": "https://www.ikea.com/ae/en/p/billy-shelf-white-10525272/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "BILLY shelf 36×26 (product page, Measurements)",
   "url": "https://www.ikea.com/ca/en/p/billy-shelf-white-70525269",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "KOMPLEMENT shelf 50×35 (product page, Measurements)",
   "url": "https://www.ikea.com/cz/en/p/komplement-shelf-dark-grey-20509455/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "KOMPLEMENT shelf 75×35 (product page, Measurements)",
   "url": "https://www.ikea.com/sg/en/p/komplement-shelf-white-50277996/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "KOMPLEMENT shelf 100×35 (product page, Measurements)",
   "url": "https://www.ikea.com/cz/en/p/komplement-shelf-dark-grey-90509452/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "KOMPLEMENT shelf 50×58 (product page, Measurements)",
   "url": "https://www.ikea.com/sg/en/p/komplement-shelf-white-10277960/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "KOMPLEMENT shelf 75×58 (product page, Measurements)",
   "url": "https://www.ikea.com/my/en/p/komplement-shelf-grey-beige-50509048/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "KOMPLEMENT shelf 100×58 (product page, Measurements)",
   "url": "https://www.ikea.com/bh/en/p/komplement-shelf-grey-beige-40509039/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "IVAR shelf 42×30 (product page, Measurements)",
   "url": "https://www.ikea.com/ie/en/p/ivar-shelf-pine-10318159/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "IVAR shelf 83×30 (product page, Measurements)",
   "url": "https://www.ikea.com/ae/en/p/ivar-shelf-pine-30318163",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "IVAR shelf 83×50 (product page, Measurements)",
   "url": "https://www.ikea.com/gb/en/p/ivar-shelf-pine-80318165/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IKEA",
   "title": "KALLAX shelving unit 77×77 (no interior listed) (product page, Measurements)",
   "url": "https://www.ikea.com.tw/en/products/sideboards/open-shelving-units/kallax-art-70351886",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "ikea-billy",
  "ikea-kallax",
  "shelf-pins-5mm",
  "furniture-dowels",
  "cam-lock-15mm"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "How thick are IKEA shelves?",
   "a": "BILLY shelves are 20 mm; KOMPLEMENT (PAX) and IVAR shelves are 18 mm (IKEA product pages)."
  },
  {
   "q": "What size is a PAX shelf?",
   "a": "KOMPLEMENT shelves are 461, 711 or 961 mm wide (50, 75, 100 frames), 348 deep for 35 cm frames or 573 deep for 58 cm frames, 18 mm thick."
  },
  {
   "q": "What is the shelf-pin spacing on IKEA bookcases?",
   "a": "IKEA does not publish it. BILLY owners report 5 mm holes on a 32 mm pitch; measure yours."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/ikea-shelf-boards/index.md"
}