AWG to MM2 Calculator | American Wire Gauge Conversion Chart

Use this AWG to mm² calculator to convert between two different wire sizing systems: the American Wire Gauge (AWG) and metric square millimeter (mm²) measurement.

The AWG system is predominantly used in North America and dates back to 1857. It uses a logarithmic scale to denote wire diameters, with lower numbers indicating thicker wires. For example, AWG 0 is thicker than AWG 10.

AWG to MM2 Calculator

AWG	Calculation	mm² (calculated)	mm² (rounded)
0000 (4/0)	0.012668 * 92^((36-(-3))/19.5)	107.22	107.2
1/0	0.012668 * 92^((36-(-1))/19.5)	53.48	53.5
3	0.012668 * 92^((36-3)/19.5)	26.67	26.7
7	0.012668 * 92^((36-7)/19.5)	10.55	10.6
11	0.012668 * 92^((36-11)/19.5)	4.17	4.17
15	0.012668 * 92^((36-15)/19.5)	1.65	1.65
19	0.012668 * 92^((36-19)/19.5)	0.653	0.65
23	0.012668 * 92^((36-23)/19.5)	0.258	0.26
27	0.012668 * 92^((36-27)/19.5)	0.102	0.10
31	0.012668 * 92^((36-31)/19.5)	0.0404	0.040

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AWG to mm² Conversion Formula

The general formula to convert AWG to mm² is:

A = π * (d/2)²

Where:

• A is the cross-sectional area in mm²
• d is the diameter of the wire in mm

To find d, we use the AWG number in the following formula:

d = 0.127 * 92^((36-n)/39)

Where n is the AWG number.

Combining these formulas, we get:

A = π (0.127 92^((36-n)/39) / 2)²

This formula can be simplified to:

A ≈ 0.012668 * 92^((36-n)/19.5)

While this formula provides the exact conversion, it’s important to note that in practical applications, wire sizes are often rounded to standard values.

AWG to mm² Chart

AWG	mm² (approx.)
0000	107.2
000	85.0
00	67.4
0	53.5
1	42.4
2	33.6
2.5	33.6
4	21.2
5	16.7
6	13.3
8	8.37
10	5.26
12	3.31
14	2.08
16	1.31
17	1.0
18	0.823
20	0.518
22	0.326
24	0.205
26	0.129
28	0.0810
30	0.0509