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AWG to mm/mm² conversion

Select gauge #:
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 41 42 43 44 45 46 47 48 49 50
Enter gauge #:
	AWG	= Calculate
Diameter in millimeters:
	mm	= Calculate
Cross sectional area in square millimeters:
	mm2	= Calculate
× Reset

* Diameter and area values are rounded to fit the nearest AWG value.

** The diameter and area of the conducting wire without insulation.

Wire gauge calculator ►

AWG to total area calculator

# of wires/strands Gauge # -- 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 41 42 43 44 45 46 47 48 49 50 -- 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 41 42 43 44 45 46 47 48 49 50 -- 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 41 42 43 44 45 46 47 48 49 50 -- 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 41 42 43 44 45 46 47 48 49 50
= Calculate × Reset
Total wire area in square millimeters:
	mm2
Total wire area in square inches:
	in2

How to convert AWG to mm

When calclating AWG from diameter or cross sectional area, the diameter and cross sectional area are rounded to the nearest AWG equivalent values.

Wire diameter calculation

The n gauge wire diameter d_n in millimeters (mm) is equal to 0.127mm times 92 raised to the power of 36 minus gauge number n, divided by 39:

d_{n (mm)} = 0.127 mm × 92^(36-n)/39

 

0.127mm is the diameter of gauge #36.

Wire cross sectional area calculation

The n gauge wire's cross sercional area A_n in square millimeters (mm²) is equal to pi divided by 4 times the square wire diameter d in millimeters (mm):

A_{n (mm}2₎ = (π/4)×d_n² = 0.012668 mm² × 92^(36-n)/19.5

AWG to mm conversion chart

AWG #	Diameter (mm)	Diameter (inch)	Area (mm2)
0000 (4/0)	11.6840	0.4600	107.2193
000 (3/0)	10.4049	0.4096	85.0288
00 (2/0)	9.2658	0.3648	67.4309
0 (1/0)	8.2515	0.3249	53.4751
1	7.3481	0.2893	42.4077
2	6.5437	0.2576	33.6308
3	5.8273	0.2294	26.6705
4	5.1894	0.2043	21.1506
5	4.6213	0.1819	16.7732
6	4.1154	0.1620	13.3018
7	3.6649	0.1443	10.5488
8	3.2636	0.1285	8.3656
9	2.9064	0.1144	6.6342
10	2.5882	0.1019	5.2612
11	2.3048	0.0907	4.1723
12	2.0525	0.0808	3.3088
13	1.8278	0.0720	2.6240
14	1.6277	0.0641	2.0809
15	1.4495	0.0571	1.6502
16	1.2908	0.0508	1.3087
17	1.1495	0.0453	1.0378
18	1.0237	0.0403	0.8230
19	0.9116	0.0359	0.6527
20	0.8118	0.0320	0.5176
21	0.7229	0.0285	0.4105
22	0.6438	0.0253	0.3255
23	0.5733	0.0226	0.2582
24	0.5106	0.0201	0.2047
25	0.4547	0.0179	0.1624
26	0.4049	0.0159	0.1288
27	0.3606	0.0142	0.1021
28	0.3211	0.0126	0.0810
29	0.2859	0.0113	0.0642
30	0.2546	0.0100	0.0509
31	0.2268	0.0089	0.0404
32	0.2019	0.0080	0.0320
33	0.1798	0.0071	0.0254
34	0.1601	0.0063	0.0201
35	0.1426	0.0056	0.0160
36	0.1270	0.0050	0.0127
37	0.1131	0.0045	0.0100
38	0.1007	0.0040	0.0080
39	0.0897	0.0035	0.0063
40	0.0799	0.0031	0.0050
41	0.0711	0.0028	0.0040
42	0.0633	0.0025	0.0032
43	0.0564	0.0022	0.0025
44	0.0502	0.0020	0.0020
45	0.0447	0.0018	0.0016
46	0.0398	0.0016	0.0012
47	0.0355	0.0014	0.0010
48	0.0316	0.0012	0.0008
49	0.0281	0.0011	0.0006
50	0.0251	0.0010	0.0005

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See also

• Wire gauge chart
• SWG to mm
• Voltage drop calculator
• Inch to mm conversion

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