Wire Gauze Calculator and Size Chart

American wire gauge calculator and size chart is  available here for free. Get now!

  1. Wire gauge calculator
  2. AWG chart
  3. Wire gauge calculation

Wire gauge calculator

[Wire_Wire_gauge_calculator]

Note: 68°F or 20°C, the results may differ in reality: as it depends on the resistivity of the material used and the number of strands in a single wire.

AWG Chart 

Look up the following values in the AWG Chart, catch now!

AWG Diameter
(inch)
Diameter
(mm)
 Area
(kcmil)
Area
(mm2)
 0000 (4/0)  0.4600  11.6840  211.6000  107.2193
 000 (3/0)  0.4096  10.4049  167.8064  85.0288
 00 (2/0)  0.3648  9.2658  133.0765  67.4309
 0 (1/0)  0.3249  8.2515  105.5345  53.4751
 1  0.2893  7.3481  83.6927  42.4077
 2  0.2576  6.5437  66.3713  33.6308
 3  0.2294  5.8273  52.6348  26.6705
 4  0.2043  5.1894  41.7413  21.1506
 5  0.1819  4.6213  33.1024  16.7732
 6  0.1620  4.1154  26.2514  13.3018
 7  0.1443  3.6649  20.8183  10.5488
 8  0.1285  3.2636  16.5097  8.3656
 9  0.1144  2.9064  13.0927  6.6342
 10  0.1019  2.5882  10.3830  5.2612
 11  0.0907  2.3048  8.2341  4.1723
 12  0.0808  2.0525  6.5299  3.3088
 13  0.0720  1.8278  5.1785  2.6240
 14  0.0641  1.6277  4.1067  2.0809
 15  0.0571  1.4495  3.2568  1.6502
 16  0.0508  1.2908  2.5827  1.3087
 17  0.0453  1.1495  2.0482  1.0378
 18  0.0403  1.0237  1.6243  0.8230
 19  0.0359  0.9116  1.2881  0.6527
 20  0.0320  0.8118  1.0215  0.5176
 21  0.0285  0.7229  0.8101  0.4105
 22  0.0253  0.6438  0.6424  0.3255
 23  0.0226  0.5733  0.5095  0.2582
 24  0.0201  0.5106  0.4040  0.2047
 25  0.0179  0.4547  0.3204  0.1624
 26  0.0159  0.4049  0.2541  0.1288
 27  0.0142  0.3606  0.2015  0.1021
 28  0.0126  0.3211  0.1598  0.0810
 29  0.0113  0.2859  0.1267  0.0642
 30  0.0100  0.2546  0.1005  0.0509
 31  0.0089  0.2268  0.0797  0.0404
 32  0.0080  0.2019  0.0632  0.0320
 33  0.0071  0.1798  0.0501  0.0254
 34  0.0063  0.1601  0.0398  0.0201
 35  0.0056  0.1426  0.0315  0.0160
 36  0.0050  0.1270  0.0250  0.0127
 37  0.0045  0.1131  0.0198  0.0100
 38  0.0040  0.1007  0.0157  0.0080
 39  0.0035  0.0897  0.0125  0.0063
 40  0.0031  0.0799  0.0099  0.0050

Wire gauge calculations

Learn to make Wire Gauge Calculation here!

Wire diameter calculations

Let’s suppose the n gauge wire diameter dn measured in inches is equal to 0.005 inches times the 92 raised to the power of number 36 minus gauge n, and total divided by 39:

dn (in) = 0.005 in × 92(36-n)/39

And the n gauge wire diameter dn in measured in millimeters (mm) is equal to around 0.127 mm times the 92 raised to the power of number 36 minus gauge number n, and the total is divided by 39:

dn (mm) = 0.127 mm × 92(36-n)/39

Wire cross sectional area calculations

The number n gauge wire’s cross the sectional area An in the measure of kilo-circular mils (kcmil) is equal to around 1000 times the square wire diameter d in measure of inches (in):

An (kcmil) = 1000×dn2 = 0.025 in2 × 92(36-n)/19.5

The number n gauge wire’s cross sectional area An measured in square inches (in2) is totally equal to pi divided by the number 4 times the square wire diameter d measured in inches (in):

An (in2) = (π/4)×dn2 = 0.000019635 in2 × 92(36-n)/19.5

If the n number of gauge wire’s cross sectional area An measured in square millimeters (mm2) is totally equal to pi which is further divided by 4 times the actual square wire diameter d measured in millimeters (mm):

An (mm2) = (π/4)×dn2 = 0.012668 mm2 × 92(36-n)/19.5

Wire resistance calculations

The n number of gauge wire resistance R measured in ohms per kilofeet (Ω/kft) is totally equal to the 0.3048×1000000000 times the wire’s resistance ρ in ohm-meters (Ω·m) which is divided by 25.42 times the cross sectional area called An in square inches (in2):

Rn (Ω/kft) = 0.3048 × 109 × ρ(Ω·m) / (25.42 × An (in2))

Suppose the n gauge wire resistance R measured in ohms per kilometer (Ω/km) is equal to the 1000000000 times of the wire’s resistance ρ measured in ohm-meters (Ω·m) which is divided by the total cross sectional area An in the square millimeters (mm2):

Rn (Ω/km) = 109 × ρ(Ω·m) / An (mm2)

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