# Wire Gauge Size Chart

American wire gauge (AWG) size calculator and chart.

## Wire gauge calculator

 Select gauge #: -- select AWG -- 0000 000 00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Or enter gauge #: AWG Select wire type: Copper Aluminum Carbon steel Electrical steel Gold Nichrome Nickel Silver Resistivity: Ω·m Diameter in inches: in Diameter in millimeters: mm Cross sectional area in kilo circular mils: kcmil Cross sectional area in square inches: in2 Cross sectional area in square millimeters: mm2 Resistance per 1000 feet*: Ω/kft Resistance per 1000 meters*: Ω/km

* @ 68°F or 20°C

** Results might change with genuine wires: different resistivity of material and number of strands in wire

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## AWG chart

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

### Wire distance across calculations

The n measure wire distance across dn in inches (in) is equivalent to 0.005in times 92 raised to the force of 36 less check number n, partitioned by 39:

dn (in) = 0.005 in × 92(36-n)/39

The n measure wire width dn in millimeters (mm) is equivalent to 0.127mm times 92 raised to the force of 36 short check number n, separated by 39:

dn (mm) = 0.127 mm × 92(36-n)/39

### Wire cross sectional region calculations

The n measure wire's cross sercional region An in kilo-round mils (kcmil) is equivalent to multiple times the square wire measurement d in inches (in):

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

The n measure wire's cross sercional region An in square inches (in2) is equivalent to pi separated by multiple times the square wire breadth d in inches (in):

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

The n measure wire's cross sercional region An in square millimeters (mm2) is equivalent to pi separated by multiple times the square wire measurement d in millimeters (mm):

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

### Wire opposition calculations

The n check wire opposition R in ohms per kilofeet (Ω/kft) is equivalent to 0.3048×1000000000 times the wire's resistivity ρ in ohm-meters (Ω·m) partitioned by 25.42 times the cross sectional region An in square inches (in2):

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

The n measure wire obstruction R in ohms per kilometer (Ω/km) is equivalent to multiple times the wire's resistivity ρ in ohm-meters (Ω·m) partitioned by the cross sectional region An in square millimeters (mm2):

Rn (Ω/km) = 109 × ρ(Ω·m)/An (mm2)

Wire check is a standard unit for estimating the width of the wire and American wire measure, or AWG, is the standard utilized in North America. The width and cross-sectional region of a wire can be found utilizing the wire check and a couple of straightforward formulas.

#### Wire Diameter

The equation to track down the breadth of the wire in inches is:

breadth (in) = .005 × 92(36 - AWG) ÷ 39

The equation to find the distance across of the wire in millimeters is:

distance across (mm) = .127 × 92(36 - AWG) ÷ 39

#### Moves toward Track down the Diameter

First - track down the type in the situation by deducting the wire measure from 36 then separating by 39.

Tracking down the type for 00, 000, and 0000 measure wire is somewhat unique. Substitute - 1, - 2, and - 3 for the check in the equation above rather than the AWG value.

Second - see as 92 to the power determined in the past step.

Third - duplicate the worth from the second step by all things considered .005 inches or .127 mm to track down the distance across of the wire in inches or millimeters respectively.

#### Wire Cross-Sectional Area

The equation to track down the cross-sectional region of the wire in kilo-roundabout mils, or kcmil, is:

region (kcmil) = 1000 × diameter2

The equation to find the cross-sectional region of the wire in square millimeters is:

region (mm2) = (π ÷ 4) × diameter2

#### Moves toward Track down the Cross-Sectional Area

First - track down the distance across of the wire. Utilize the recipe above to compute the width assuming the AWG is known.

Second - duplicate the breadth by 1000 to track down the area in kcmil or by (3.1415 ÷ 4) to compute square millimeters.