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AWG To mm Chart (0-40 AWG Gauge Wires To mm)

2023-06-30

AWG or American Wire Gauge is a diameter unit used predominantly in the US, while a metric mm (millimeters) is used around the world.

Both AWG and mm are basically a measure of wire diameter (thickness).

In many cases, you will need to convert AWG to mm like this:

awg to mm for 12 awg, 14 awg, 16 awg, 18 awg, 20 awg, 22 awg, 24 awg, 26 awg, 28 awg wires
The higher the wire AWG gauge, the less mm diameter a wire has. Example: 12 AWG wire has a diameter of over 2 mm and 20 AWG has a below 1 mm diameter.
 
In theory, you convert AWG gauge to mm using this somewhat complex AWG to mm formula:
AWG To mm formula
 
In practice, we prefer to use a simple AWG to mm chart. Here is the full chart for all AWG gauge wires to mm:

AWG To mm Chart

AWG Wire Gauge: mm (Diameter):
0000 (4/0) AWG 11.684 mm
000 (3/0) AWG 10.405 mm
00 (2/0) AWG 9.266 mm
0 (1/0) AWG 8.251 mm
1 AWG 7.348 mm
2 AWG 6.544 mm
3 AWG 5.827 mm
4 AWG 5.189 mm
5 AWG 4.621 mm
6 AWG 4.115 mm
7 AWG 3.665 mm
8 AWG 3.264 mm
9 AWG 2.906 mm
10 AWG 2.588 mm
11 AWG 2.305 mm
12 AWG 2.053 mm
13 AWG 1.828 mm
14 AWG 1.628 mm
15 AWG 1.450 mm
16 AWG 1.291 mm
17 AWG 1.150 mm
18 AWG 1.024 mm
19 AWG 0.912 mm
20 AWG 0.812 mm
21 AWG 0.723 mm
22 AWG 0.644 mm
23 AWG 0.573 mm
24 AWG 0.511 mm
25 AWG 0.455 mm
26 AWG 0.405 mm
27 AWG 0.361 mm
28 AWG 0.321 mm
29 AWG 0.286 mm
30 AWG 0.255 mm
31 AWG 0.227 mm
32 AWG 0.202 mm
33 AWG 0.180 mm
34 AWG 0.160 mm
35 AWG 0.143 mm
36 AWG 0.127 mm
37 AWG 0.113 mm
38 AWG 0.101 mm
39 AWG 0.0897 mm
40 AWG 0.0799 mm

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