Fractional, Metric, and Imperial Sizes

Outside Diamete			Birmingham Wire Gauge (BWG)
Outside Diamete			20	18	16	15	14	13	12	11	10
In		Mm
			(0.889 Mm)	(1.245 Mm)	(1.651 Mm)	(1.829 Mm)	(2.108 Mm)	(2.413 Mm)	(2.769 Mm)	(3.048 Mm)	(3.403 Mm)
			Weight, Kg/M (Average Wall )
1/4	0.250	6.350	0.12	0.16	0.19	–	–	–	–	–	–
5/16	0.313	7.950	0.15	0.21	0.25	0.28	–	–	–	–	–
3/8	0.375	9.525	0.19	0.25	0.31	0.34	0.39	–	–	–	–
1/2	0.500	12.700	0.25	0.34	0.45	0.49	0.55	0.61	0.68	0.72	–
5/8	0.625	15.875	0.33	0.45	0.58	0.64	0.71	0.80	0.89	0.97	–
3/4	0.750	19.050	0.40	0.55	0.72	0.77	0.88	0.98	1.12	1.20	1.31
7/8	0.875	22.225	0.46	0.64	0.83	0.92	1.04	1.18	1.32	1.44	1.58
1	1.000	25.400	0.54	0.74	0.97	1.06	1.21	1.37	1.55	1.68	1.92
1 1/8	1.125	28.575	0.61	0.83	1.10	1.21	1.37	1.56	1.76	1.92	2.11
1 1/4	1.250	31.750	0.68	0.94	1.23	1.35	1.53	1.76	1.96	2.16	2.40
1 3/8	1.375	34.925	0.74	1.03	1.35	1.49	1.70	1.93	2.19	2.40	2.65
1 1/2	1.500	38.100	0.82	1.13	1.49	1.64	1.87	2.17	2.40	2.63	2.92
1 3/4	1.750	44.450	0.97	1.32	1.74	1.92	2.20	2.50	2.84	3.10	3.44
2	2.000	50.800	–	1.52	1.99	2.20	2.53	2.89	3.27	3.59	3.97
2 1/4	2.250	57.150	–	1.73	2.26	2.48	2.87	3.26	3.70	4.06	4.51
2 3/8	2.375	60.325	–	1.81	2.38	2.63	3.02	3.44	3.93	4.30	4.78
2 1/2	2.500	63.500	–	1.91	2.52	2.78	3.18	3.66	4.14	4.54	5.04
2 7/8	2.875	73.025	–	2.20	2.90	3.20	3.68	4.20	4.79	5.25	5.83
3	3.000	76.200	–	2.31	3.04	3.35	3.85	4.39	5.00	5.49	6.10
3 1/2	3.500	88.900	–	2.69	3.56	3.93	4.51	5.15	5.86	6.44	7.17
4	4.000	101.60	–	–	4.11	4.54	5.21	5.95	6.80	7.47	8.30