{
 "meta": {
  "dataset": "wire-awg",
  "description": "AWG nominal diameters (ASTM B258) with derived areas.",
  "schema_version": "1",
  "generated": "2026-08-12",
  "records": 44,
  "license": "CC BY 4.0 — attribution: BenchReference (benchreference.com)",
  "sources": [
   "astm-b258"
  ],
  "provenance": "https://benchreference.com/sources/"
 },
 "entries": [
  {
   "awg": "4/0",
   "n": -3,
   "diameter_inches": 0.46,
   "diameter_mm": 11.684,
   "cmil": 211600,
   "mm2": 107.2193
  },
  {
   "awg": "3/0",
   "n": -2,
   "diameter_inches": 0.4096,
   "diameter_mm": 10.40384,
   "cmil": 167772,
   "mm2": 85.0114
  },
  {
   "awg": "2/0",
   "n": -1,
   "diameter_inches": 0.3648,
   "diameter_mm": 9.26592,
   "cmil": 133079,
   "mm2": 67.4321
  },
  {
   "awg": "1/0",
   "n": 0,
   "diameter_inches": 0.3249,
   "diameter_mm": 8.25246,
   "cmil": 105560,
   "mm2": 53.488
  },
  {
   "awg": "1",
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   "diameter_inches": 0.2893,
   "diameter_mm": 7.3482199999999995,
   "cmil": 83694,
   "mm2": 42.4086
  },
  {
   "awg": "2",
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   "diameter_inches": 0.2576,
   "diameter_mm": 6.5430399999999995,
   "cmil": 66358,
   "mm2": 33.624
  },
  {
   "awg": "3",
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   "diameter_inches": 0.2294,
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   "cmil": 52624,
   "mm2": 26.6652
  },
  {
   "awg": "4",
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   "diameter_inches": 0.2043,
   "diameter_mm": 5.18922,
   "cmil": 41738,
   "mm2": 21.1492
  },
  {
   "awg": "5",
   "n": 5,
   "diameter_inches": 0.1819,
   "diameter_mm": 4.62026,
   "cmil": 33088,
   "mm2": 16.7657
  },
  {
   "awg": "6",
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   "diameter_inches": 0.162,
   "diameter_mm": 4.1148,
   "cmil": 26244,
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  },
  {
   "awg": "7",
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   "diameter_inches": 0.1443,
   "diameter_mm": 3.66522,
   "cmil": 20822,
   "mm2": 10.5509
  },
  {
   "awg": "8",
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   "diameter_inches": 0.1285,
   "diameter_mm": 3.2639,
   "cmil": 16512,
   "mm2": 8.3669
  },
  {
   "awg": "9",
   "n": 9,
   "diameter_inches": 0.1144,
   "diameter_mm": 2.90576,
   "cmil": 13087,
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  },
  {
   "awg": "10",
   "n": 10,
   "diameter_inches": 0.1019,
   "diameter_mm": 2.58826,
   "cmil": 10384,
   "mm2": 5.2615
  },
  {
   "awg": "11",
   "n": 11,
   "diameter_inches": 0.0907,
   "diameter_mm": 2.30378,
   "cmil": 8226,
   "mm2": 4.1684
  },
  {
   "awg": "12",
   "n": 12,
   "diameter_inches": 0.0808,
   "diameter_mm": 2.05232,
   "cmil": 6529,
   "mm2": 3.3081
  },
  {
   "awg": "13",
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   "diameter_inches": 0.072,
   "diameter_mm": 1.8287999999999998,
   "cmil": 5184,
   "mm2": 2.6268
  },
  {
   "awg": "14",
   "n": 14,
   "diameter_inches": 0.0641,
   "diameter_mm": 1.62814,
   "cmil": 4109,
   "mm2": 2.082
  },
  {
   "awg": "15",
   "n": 15,
   "diameter_inches": 0.0571,
   "diameter_mm": 1.45034,
   "cmil": 3260,
   "mm2": 1.6521
  },
  {
   "awg": "16",
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   "diameter_inches": 0.0508,
   "diameter_mm": 1.29032,
   "cmil": 2581,
   "mm2": 1.3076
  },
  {
   "awg": "17",
   "n": 17,
   "diameter_inches": 0.0453,
   "diameter_mm": 1.15062,
   "cmil": 2052,
   "mm2": 1.0398
  },
  {
   "awg": "18",
   "n": 18,
   "diameter_inches": 0.0403,
   "diameter_mm": 1.02362,
   "cmil": 1624,
   "mm2": 0.8229
  },
  {
   "awg": "19",
   "n": 19,
   "diameter_inches": 0.0359,
   "diameter_mm": 0.91186,
   "cmil": 1289,
   "mm2": 0.653
  },
  {
   "awg": "20",
   "n": 20,
   "diameter_inches": 0.032,
   "diameter_mm": 0.8128,
   "cmil": 1024,
   "mm2": 0.5189
  },
  {
   "awg": "21",
   "n": 21,
   "diameter_inches": 0.0285,
   "diameter_mm": 0.7239,
   "cmil": 812,
   "mm2": 0.4116
  },
  {
   "awg": "22",
   "n": 22,
   "diameter_inches": 0.0253,
   "diameter_mm": 0.64262,
   "cmil": 640,
   "mm2": 0.3243
  },
  {
   "awg": "23",
   "n": 23,
   "diameter_inches": 0.0226,
   "diameter_mm": 0.5740399999999999,
   "cmil": 511,
   "mm2": 0.2588
  },
  {
   "awg": "24",
   "n": 24,
   "diameter_inches": 0.0201,
   "diameter_mm": 0.51054,
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  },
  {
   "awg": "25",
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   "diameter_inches": 0.0179,
   "diameter_mm": 0.45465999999999995,
   "cmil": 320,
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  },
  {
   "awg": "26",
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   "diameter_inches": 0.0159,
   "diameter_mm": 0.40386,
   "cmil": 253,
   "mm2": 0.1281
  },
  {
   "awg": "27",
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   "diameter_inches": 0.0142,
   "diameter_mm": 0.36068,
   "cmil": 202,
   "mm2": 0.1022
  },
  {
   "awg": "28",
   "n": 28,
   "diameter_inches": 0.0126,
   "diameter_mm": 0.32004,
   "cmil": 159,
   "mm2": 0.0804
  },
  {
   "awg": "29",
   "n": 29,
   "diameter_inches": 0.0113,
   "diameter_mm": 0.28701999999999994,
   "cmil": 128,
   "mm2": 0.0647
  },
  {
   "awg": "30",
   "n": 30,
   "diameter_inches": 0.01,
   "diameter_mm": 0.254,
   "cmil": 100,
   "mm2": 0.0507
  },
  {
   "awg": "31",
   "n": 31,
   "diameter_inches": 0.0089,
   "diameter_mm": 0.22605999999999998,
   "cmil": 79,
   "mm2": 0.0401
  },
  {
   "awg": "32",
   "n": 32,
   "diameter_inches": 0.008,
   "diameter_mm": 0.2032,
   "cmil": 64,
   "mm2": 0.0324
  },
  {
   "awg": "33",
   "n": 33,
   "diameter_inches": 0.0071,
   "diameter_mm": 0.18034,
   "cmil": 50,
   "mm2": 0.0255
  },
  {
   "awg": "34",
   "n": 34,
   "diameter_inches": 0.0063,
   "diameter_mm": 0.16002,
   "cmil": 40,
   "mm2": 0.0201
  },
  {
   "awg": "35",
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   "diameter_inches": 0.0056,
   "diameter_mm": 0.14223999999999998,
   "cmil": 31,
   "mm2": 0.0159
  },
  {
   "awg": "36",
   "n": 36,
   "diameter_inches": 0.005,
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   "cmil": 25,
   "mm2": 0.0127
  },
  {
   "awg": "37",
   "n": 37,
   "diameter_inches": 0.0045,
   "diameter_mm": 0.11429999999999998,
   "cmil": 20,
   "mm2": 0.0103
  },
  {
   "awg": "38",
   "n": 38,
   "diameter_inches": 0.004,
   "diameter_mm": 0.1016,
   "cmil": 16,
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  },
  {
   "awg": "39",
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   "diameter_inches": 0.0035,
   "diameter_mm": 0.08889999999999999,
   "cmil": 12,
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  {
   "awg": "40",
   "n": 40,
   "diameter_inches": 0.0031,
   "diameter_mm": 0.07873999999999999,
   "cmil": 10,
   "mm2": 0.0049
  }
 ]
}