{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "coins-us-and-euro",
 "name": "Coin sizes: US penny to dollar and euro coins (diameter × thickness)",
 "kind": "standard",
 "category": "Everyday objects",
 "group": "Coins",
 "year": null,
 "question": "What is the diameter of a US quarter?",
 "tags": [
  "coin",
  "quarter",
  "penny",
  "euro"
 ],
 "aliases": [
  "quarter diameter",
  "penny size mm",
  "coin dimensions",
  "euro coin sizes",
  "coin holder dimensions"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 14,
 "url": "https://xemstudio.com/objects/coins-us-and-euro/",
 "sheet_txt": "https://xemstudio.com/objects/coins-us-and-euro/sheet.txt",
 "sheet": {
  "basis": "US Mint coin specifications; European Central Bank euro coin specifications",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Plain discs at the official diameter and thickness, for coin holders, slots, sorters and counterweights; no design is reproduced."
  ],
  "table": {
   "columns": [
    "coin",
    "diameter_mm",
    "thickness_mm"
   ],
   "rows": [
    [
     "US cent (penny)",
     19.05,
     1.52
    ],
    [
     "US 5 cents (nickel)",
     21.21,
     1.95
    ],
    [
     "US 10 cents (dime)",
     17.91,
     1.35
    ],
    [
     "US 25 cents (quarter)",
     24.26,
     1.75
    ],
    [
     "US half dollar",
     30.61,
     2.15
    ],
    [
     "US dollar coin (golden dollar)",
     26.49,
     2
    ],
    [
     "1 euro cent",
     16.25,
     1.67
    ],
    [
     "2 euro cent",
     18.75,
     1.67
    ],
    [
     "5 euro cent",
     21.25,
     1.67
    ],
    [
     "10 euro cent",
     19.75,
     1.93
    ],
    [
     "20 euro cent",
     22.25,
     2.14
    ],
    [
     "50 euro cent",
     24.25,
     2.38
    ],
    [
     "1 euro",
     23.25,
     2.33
    ],
    [
     "2 euro",
     25.75,
     2.2
    ]
   ]
  }
 },
 "sheet_text": "Coin sizes: US penny to dollar and euro coins (diameter × thickness) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/coins-us-and-euro/  (CC BY 4.0)\nBasis: US Mint coin specifications; European Central Bank euro coin specifications\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Plain discs at the official diameter and thickness, for coin holders, slots, sorters and counterweights; no design is reproduced.\n\ncoin  diameter_mm  thickness_mm\nUS cent (penny)  19.05  1.52\nUS 5 cents (nickel)  21.21  1.95\nUS 10 cents (dime)  17.91  1.35\nUS 25 cents (quarter)  24.26  1.75\nUS half dollar  30.61  2.15\nUS dollar coin (golden dollar)  26.49  2.0\n1 euro cent  16.25  1.67\n2 euro cent  18.75  1.67\n5 euro cent  21.25  1.67\n10 euro cent  19.75  1.93\n20 euro cent  22.25  2.14\n50 euro cent  24.25  2.38\n1 euro  23.25  2.33\n2 euro  25.75  2.2\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- US Mint: Coin specifications — web — US Mint; dimensions are facts — https://www.usmint.gov/learn/coins-and-medals/circulating-coins\n- European Central Bank: Euro coins: specifications — web — European Central Bank; dimensions are facts — https://www.ecb.europa.eu/euro/coins/html/index.en.html\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 14 parts): https://xemstudio.com/files/hardware/coins-us-and-euro/index.json\nAPI: https://xemstudio.com/api/geometry?object=coins-us-and-euro\n",
 "sources": [
  {
   "publisher": "US Mint",
   "title": "Coin specifications",
   "url": "https://www.usmint.gov/learn/coins-and-medals/circulating-coins",
   "formats": [
    "web"
   ],
   "license": "US Mint; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "European Central Bank",
   "title": "Euro coins: specifications",
   "url": "https://www.ecb.europa.eu/euro/coins/html/index.en.html",
   "formats": [
    "web"
   ],
   "license": "European Central Bank; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "id-cards-and-sim-cards"
 ],
 "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": "US quarter?",
   "a": "24.26 mm across, 1.75 mm thick."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "coin-us-penny",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-penny.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-penny.stl",
   "note": "US cent (penny): Ø19.05 × 1.52 mm (plain disc, no design)"
  },
  {
   "file": "coin-us-nickel",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-nickel.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-nickel.stl",
   "note": "US 5 cents (nickel): Ø21.21 × 1.95 mm (plain disc, no design)"
  },
  {
   "file": "coin-us-dime",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-dime.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-dime.stl",
   "note": "US 10 cents (dime): Ø17.91 × 1.35 mm (plain disc, no design)"
  },
  {
   "file": "coin-us-quarter",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-quarter.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-quarter.stl",
   "note": "US 25 cents (quarter): Ø24.26 × 1.75 mm (plain disc, no design)"
  },
  {
   "file": "coin-us-half-dollar",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-half-dollar.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-half-dollar.stl",
   "note": "US half dollar: Ø30.61 × 2.15 mm (plain disc, no design)"
  },
  {
   "file": "coin-us-dollar-coin",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-dollar-coin.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-us-dollar-coin.stl",
   "note": "US dollar coin (golden dollar): Ø26.49 × 2.0 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-1c",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-1c.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-1c.stl",
   "note": "1 euro cent: Ø16.25 × 1.67 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-2c",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-2c.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-2c.stl",
   "note": "2 euro cent: Ø18.75 × 1.67 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-5c",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-5c.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-5c.stl",
   "note": "5 euro cent: Ø21.25 × 1.67 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-10c",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-10c.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-10c.stl",
   "note": "10 euro cent: Ø19.75 × 1.93 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-20c",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-20c.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-20c.stl",
   "note": "20 euro cent: Ø22.25 × 2.14 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-50c",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-50c.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-50c.stl",
   "note": "50 euro cent: Ø24.25 × 2.38 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-1",
   "formats": [
    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-1.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-1.stl",
   "note": "1 euro: Ø23.25 × 2.33 mm (plain disc, no design)"
  },
  {
   "file": "coin-euro-2",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-2.step",
   "stl": "https://xemstudio.com/files/hardware/coins-us-and-euro/coin-euro-2.stl",
   "note": "2 euro: Ø25.75 × 2.2 mm (plain disc, no design)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/coins-us-and-euro/index.md"
}