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

Wire measure calculations

Wire dimension calculations

The n degree wire width d_n in inches (in) is equal to zero.005in instances 92 raised to the strain of 36 brief test variety n, partitioned with the aid of 39:

d_{n (in)} = 0.Zero.Five in &instances; 90 two^(36-n)/39

The n check wire width d_n in millimeters (mm) is equal to 0.127mm times ninety raised to the stress of 36 much less degree extensive variety n, partitioned by way of using 39:

d_{n (mm)} = 0.127 mm &instances; ninety ^(36-n)/39

Wire pass sectional location calculations

The n diploma wire's go sercional region A_n in kilo-spherical mils (kcmil) is equivalent to more than one times the square wire width d in inches (in):

A_{n (kcmil)} = a thousand&instances;d_n² = 0.0.5 in² × ninety ^{(36-n)/19.Five}

The n take a look at wire's move sercional area A_n in rectangular inches (in²) is equal to pi separated through manner of a couple of times the rectangular twine width d in inches (in):

A_{n (in}2₎ = (π/4)×d_n² = zero.000019635 in² × ninety two^{(36-n)/19.Five}

The n degree twine's pass sercional region A_n in rectangular millimeters (mm²) is equal to pi separated by way of more than one times the rectangular wire breadth d in millimeters (mm):

A_{n (mm}2₎ = (π/four)×d_n² = zero.012668 mm² &instances; 92^{(36-n)/19.Five}

Wire obstruction calculations

The n degree cord opposition R in ohms in step with kilofeet (Ω/kft) is equal to 0.3048&instances;one billion times the cord's resistivity ρ in ohm-meters (Ω·m) separated by way of 25.Four² times the cross sectional region A_n in rectangular inches (in²):

R_{n (Ω/kft)} = 0.3048 &instances; 10^nine × ρ_(Ω·m)/(25.Four² &instances; A_{n (in}2₎)

The n degree cord obstruction R in ohms per kilometer (Ω/km) is equal to more than one instances the twine's resistivity ρ in ohm-meters (Ω·m) separated by way of the flow sectional place A_n in rectangular millimeters (mm²):

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

 

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Wire test is a wellknown unit for estimating the measurement of the wire and American wire check, or AWG, is the same old implemented in North America. The measurement and skip-sectional location of a twine can be observed using the wire test and multiple sincere formulation.

Wire Diameter

The recipe to track down the space all through of the cord in inches is:

breadth (in) = .Half × ninety ^{(36 - AWG) ÷ 39}

The equation to discover the breadth of the twine in millimeters is:

dimension (mm) = .127 × ninety ^{(36 - AWG) ÷ 39}

Moves toward Track down the Diameter

First - music down the kind within the state of affairs via removing the cord degree from 36 then putting apart with the resource of 39.

Tracking down the sort for 00, 000, and 0000 test twine is extremely particular. Substitute - 1, - 2, and - 3 for the degree within the recipe above in preference to the AWG fee.

Second - view as 90 to the strength determined within the beyond step.

Third - reproduction the worth from the second step by manner of the identical token .Half of inches or .127 mm to track down the width of the wire in inches or millimeters respectively.

Wire Cross-Sectional Area

The equation to tune down the skip-sectional vicinity of the wire in kilo-round mils, or kcmil, is:

region (kcmil) = a thousand × diameter²

The recipe to discover the pass-sectional vicinity of the cord in square millimeters is:

area (mm²) = (π ÷ four) × diameter²

Moves in the direction of Track down the Cross-Sectional Area

First - tune down the width of the cord. Utilize the recipe above to compute the width assuming the AWG is understood.

Second - duplicate the width by using the usage of one thousand to track down the vicinity in kcmil or with the aid of way of (3.1415 ÷ four) to compute rectangular millimeters.

* @ 68°F or 20°C

** Results may trade with proper wires: specific resistivity of fabric and kind of strands in twine

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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