The American wire gauge (AWG) is also known the Brown and Sharpe gauge for copper wire. Similar to Birmingham wire gauge (BWG), it is also extensively used to specify the wall thickness of stainless steel tubing. The AWG values are listed in both U.S. customary units and metric units below:

Gauge No.:	inch	mm
0000	0.460	11.6840
000	0.410	10.4140
00	0.365	9.2710
0	0.325	8.2550
1	0.289	7.3406
2	0.258	6.5532
3	0.229	5.8166
4	0.204	5.1816
5	0.182	4.6228
6	0.162	4.1148
7	0.144	3.6576
8	0.128	3.2512
9	0.114	2.8956
10	0.102	2.5908
11	0.091	2.3114
12	0.081	2.0574
13	0.072	1.8288
14	0.064	1.6256
15	0.057	1.4478
16	0.051	1.2954
17	0.045	1.1430
18	0.040	1.0160
19	0.036	0.9144
20	0.032	0.8128
21	0.0285	0.7239
22	0.0253	0.6426
23	0.0226	0.5740
24	0.0201	0.5105
25	0.0179	0.4547
26	0.0159	0.4039
27	0.0142	0.3607
28	0.0126	0.3200
29	0.0113	0.2870
30	0.0100	0.2540
31	0.0089	0.2261
32	0.0080	0.2032
33	0.0071	0.1803
34	0.0063	0.1600
35	0.0056	0.1422
36	0.0050	0.1270
37	0.0045	0.1143
38	0.0040	0.1016
39	0.0035	0.0889
40	0.0031	0.0787

*The AWG contains 44 of gauge numbers from 0000, 000, 00, 0 to 40.