Sheet Metal Gauge Thickness Chart

Within the world of laser cutting, metal thickness based on gauge is a vital consideration. It’s something we use regularly at Cypress Metals, and something our clients should have access to as well. The table below is a simple resource that allows you to sort thickness by both inches and millimeters, for both steel and aluminum:

Gauge (ga) Steel Thickness (in.) Steel Thickness (mm) Aluminum Thickness (in.) Aluminum Thickness (mm)
3 0.2391 6.07 0.2294 5.83
4 0.2242 5.69 0.2043 5.19
5 0.2092 5.31 0.1819 4.62
6 0.1943 4.94 0.162 4.11
7 0.1793 4.55 0.1443 3.67
8 0.1644 4.18 0.1285 3.26
9 0.1495 3.80 0.1144 2.91
10 0.1345 3.42 0.1019 2.59
11 0.1196 3.04 0.0907 2.30
12 0.1046 2.66 0.0808 2.05
13 0.0897 2.28 0.072 1.83
14 0.0747 1.90 0.0641 1.63
15 0.0673 1.71 0.0571 1.45
16 0.0598 1.52 0.0508 1.29
17 0.0538 1.37 0.0453 1.15
18 0.0478 1.21 0.0403 1.02
19 0.0418 1.06 0.0359 0.91
20 0.0359 0.91 0.032 0.81
21 0.0329 0.84 0.0285 0.72
22 0.0299 0.76 0.0253 0.64
23 0.0269 0.68 0.0226 0.57
24 0.0239 0.61 0.0201 0.51
25 0.0209 0.53 0.0179 0.45
26 0.0179 0.45 0.0159 0.40
27 0.0164 0.42 0.0142 0.36
28 0.0149 0.38 0.0126 0.32
29 0.0135 0.34 0.0113 0.29
30 0.012 0.30 0.01 0.25
31 0.0105 0.27 0.0089 0.23
32 0.0097 0.25 0.008 0.20
33 0.009 0.23 0.0071 0.18
34 0.0082 0.21 0.0063 0.16
35 0.0075 0.19 0.0056 0.14
36 0.0067 0.17 – –