What is the AWG to mm² formula?

Use area(mm²) = 0.012668 × 92^((36 - AWG) / 19.5). Larger conductors have lower AWG numbers.

How do I convert mm² back to AWG?

Rearrange the formula: AWG = 36 - 19.5 × log(mm² / 0.012668) / log(92). Then round to a standard gauge size.

No. AWG is logarithmic, so each gauge step changes cross-sectional area by a fixed ratio, not a fixed increment.

Diameter is useful for conduit fill and mechanical fit checks, while mm² is used for current and resistance calculations.

Convert American Wire Gauge sizes to cross-sectional area in square millimeters.

19 AWG =

0.6527 mm²

Representative value from the AWG to mm² reference table.

This conversion has 44 predefined value pages for programmatic SEO coverage.

Switch modes to convert AWG to mm² or estimate equivalent AWG from mm².

Converted Value

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Use this complete table for quick lookup and internal linking to specific value pages.

AWG to mm² Reference
AWG	Area (mm²)	Diameter (mm)	Diameter (in)
4/0 AWG	107.222 mm²	11.6841	0.46001
3/0 AWG	85.0309 mm²	10.405	0.40965
2/0 AWG	67.4325 mm²	9.2659	0.3648
1/0 AWG	53.4764 mm²	8.2516	0.32486
1 AWG	42.4087 mm²	7.3482	0.2893
2 AWG	33.6317 mm²	6.5438	0.25763
3 AWG	26.6711 mm²	5.8274	0.22943
4 AWG	21.1512 mm²	5.1895	0.20431
5 AWG	16.7736 mm²	4.6213	0.18194
6 AWG	13.3021 mm²	4.1154	0.16202
7 AWG	10.549 mm²	3.6649	0.14429
8 AWG	8.3658 mm²	3.2637	0.12849
9 AWG	6.6344 mm²	2.9064	0.11442
10 AWG	5.2613 mm²	2.5882	0.1019
11 AWG	4.1724 mm²	2.3049	0.09074
12 AWG	3.3089 mm²	2.0526	0.08081
13 AWG	2.624 mm²	1.8278	0.07196
14 AWG	2.081 mm²	1.6277	0.06408
15 AWG	1.6503 mm²	1.4496	0.05707
16 AWG	1.3087 mm²	1.2909	0.05082
17 AWG	1.0379 mm²	1.1495	0.04526
18 AWG	0.8231 mm²	1.0237	0.0403
19 AWG	0.6527 mm²	0.9116	0.03589
20 AWG	0.5176 mm²	0.8118	0.03196
21 AWG	0.4105 mm²	0.723	0.02846
22 AWG	0.3255 mm²	0.6438	0.02535
23 AWG	0.2582 mm²	0.5733	0.02257
24 AWG	0.2047 mm²	0.5106	0.0201
25 AWG	0.1624 mm²	0.4547	0.0179
26 AWG	0.1288 mm²	0.4049	0.01594
27 AWG	0.1021 mm²	0.3606	0.0142
28 AWG	0.081 mm²	0.3211	0.01264
29 AWG	0.0642 mm²	0.2859	0.01126
30 AWG	0.0509 mm²	0.2546	0.01003
31 AWG	0.0404 mm²	0.2268	0.00893
32 AWG	0.032 mm²	0.2019	0.00795
33 AWG	0.0254 mm²	0.1798	0.00708
34 AWG	0.0201 mm²	0.1601	0.0063
35 AWG	0.016 mm²	0.1426	0.00561
36 AWG	0.0127 mm²	0.127	0.005
37 AWG	0.01 mm²	0.1131	0.00445
38 AWG	0.008 mm²	0.1007	0.00397
39 AWG	0.0063 mm²	0.0897	0.00353
40 AWG	0.005 mm²	0.0799	0.00314

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