gauge

May 2025

wires gauges

conversion AWG (B&S), SWG gaugess to inch and mm

American Wire Gauges AWG - is a standardised wire sizing system, primarily used in the United States and Canada, commonly used for electrical wiring, resistance wire, and heating elements
Standard Wire Gauges SWG - is a British wire sizing system, widely used in the UK and countries that follow metric system, used in industrial applications, crafting, and non-electrical uses

AWG	inch	mm	SWG	inch	mm
18	0.0403	1.02	18	0.0480	1.22
19	0.0359	0.912	19	0.0400	1.02
20	0.0320	0812	20	0.0360	0.914
21	0.0285	0.723	21	0.0320	0.813
22	0.0254	0.644	22	0.0280	0.711
23	0.0226	0.573	23	0.0240	0.610
24	0.0201	0.511	24	0.0220	0.559
25	0.0179	0.455	25	0.0200	0.508
26	0.0159	0.405	26	0.0180	0.457
27	0.0142	0.361	27	0.0164	0.417
28	0.0126	0.321	28	0.0148	0.376
29	0.0113	0.286	29	0.0136	0.345
30	0.0100	0.255	30	0.0124	0.315
31	0.00893	0.227	31	0.0116	0.295
32	0.00795	0.202	32	0.0108	0.274
33	0.00708	0.180	33	0.0100	0.254
34	0.00631	0.160	34	0.00920	0.234
35	0.00562	0.143	35	0.00840	0.213
36	0.00500	0.127	36	0.00760	0.193
37	0.00445	0.113	37	0.00680	0.173
38	0.00397	0.101	38	0.00600	0.152
39	0.00353	0.0897	39	0.00520	0.132
40	0.00315	0.0799	40	0.00480	0.122
41	0.00280	0.0711	41	0.00440	0.112
42	0.00249	0.0633	42	0.00400	0.102
43	0.00222	0.0564	43	0.00360	0.0914
44	0.00198	0.0502	44	0.00320	0.0813
45	0.00176	0.0447	45	0.00280	0.0711
46	0.00157	0.0398	46	0.00240	0.0610
47	0.00140	0.0355	47	0.00200	0.0508
48	0.00124	0.0316	48	0.00160	0.0406
49	0.00111	0.0281	49	0.00120	0.0305