AWG Reference Table

The table below shows the AWG value for a given bare-conductor diameter.

Wire Diameter (mm)	AWG Value	Wire Diameter (mm)	AWG Value	Wire Diameter (mm)	AWG Value	Wire Diameter (mm)	AWG Value
13.12	5/0	3.67	7	1.024	18	0.286	29
11.68	4/0	3.26	8	0.912	19	0.255	30
10.40	3/0	2.91	9	0.812	20	0.227	31
9.27	2/0	2.59	10	0.723	21	0.202	32
8.25	0	2.30	11	0.644	22	0.180	33
7.35	1	2.05	12	0.573	23	0.160	34
6.54	2	1.83	13	0.511	24	0.143	35
5.83	3	1.63	14	0.455	25	0.127	36
5.19	4	1.45	15	0.405	26	0.113	37
4.62	5	1.29	16	0.361	27	0.101	38
4.11	6	1.15	17	0.321	28	0.0897	39

The diameter (in mm) of the conductor for a known AWG value can be calculated by using this formula:

D  =  25.4 (.005 x 92^(36-AWG)/39)

As an example, to find out the diameter of a wire with an AWG value of 14:

36 - 14 = 22

22/39 = 0.5641

92 ^(0.5641) = 12.82

.005 x 12.82 = 0.0641 (which is the diameter in inches)

25.4 x 0.0641 =  1.63mm diameter