Wire Gauge Size Chart

American wire gauge (AWG) size calculator and chart.

• Wire gauge calculator
• AWG chart
• Wire gauge calculations

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 d_n in inches (in) is equivalent to 0.005in times 92 raised to the force of 36 less check number n, partitioned by 39:

d_{n (in)} = 0.005 in × 92^(36-n)/39

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

d_{n (mm)} = 0.127 mm × 92^(36-n)/39

Wire cross sectional region calculations

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

A_{n (kcmil)} = 1000×d_n² = 0.025 in² × 92^(36-n)/19.5

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

A_{n (in}2₎ = (π/4)×d_n² = 0.000019635 in² × 92^(36-n)/19.5

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

A_{n (mm}2₎ = (π/4)×d_n² = 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 A_n in square inches (in²):

R_{n (Ω/kft)} = 0.3048 × 10⁹ × ρ_(Ω·m)/(25.4² × A_{n (in}2₎)

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 A_n in square millimeters (mm²):

R_{n (Ω/km)} = 10⁹ × ρ_(Ω·m)/A_{n (mm}2₎

 

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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.