Standard Sheet Metal Gauges Chart

The sheet metal gauge refers to the thickness of sheet metals. The large the gauge number, the thinner the metal sheet. Please note that for different types of metals, the thickness is different under the same gauge number.

Gauge US Standard Gauge Sheet Steel Galvanized Steel Stainless Steel Aluminum
inch mm inch mm inch mm inch mm inch mm
7/00 0.5 12.7
6/00 0.469 11.908 0.469 11.905 0.58 14.732
5/00 0.438 11.113 0.438 11.113 0.517 13.119
4/00 0.406 10.32 0.406 10.317 0.46 11.684
3/00 0.375 9.525 0.375 9.525 0.41 10.404
2/00 0.344 8.733 0.344 8.73 0.365 9.266
1/00 0.313 7.938 0.313 7.938 0.325 8.252
1 0.281 7.145 0.281 7.142 0.289 7.348
2 0.266 6.746 0.266 6.746 0.258 6.543
3 0.25 6.35 0.239 6.073 0.25 6.35 0.229 5.827
4 0.234 5.954 0.224 5.695 0.234 5.954 0.204 5.189
5 0.219 5.558 0.209 5.314 0.219 5.555 0.182 4.62
6 0.203 5.159 0.194 4.935 0.203 5.159 0.162 4.115
7 0.188 4.763 0.179 4.554 0.188 4.763 0.144 3.665
8 0.172 4.366 0.164 4.176 0.168 4.267 0.172 4.366 0.129 3.264
9 0.156 3.97 0.15 3.797 0.153 3.886 0.156 3.967 0.114 2.906
10 0.141 3.571 0.135 3.416 0.138 3.505 0.141 3.571 0.102 2.588
11 0.125 3.175 0.12 3.038 0.123 3.124 0.125 3.175 0.091 2.304
12 0.109 2.779 0.105 2.657 0.108 2.743 0.109 2.779 0.081 2.052
13 0.094 2.383 0.09 2.278 0.093 2.362 0.094 2.38 0.072 1.829
14 0.078 1.984 0.075 1.897 0.079 2.007 0.078 1.984 0.064 1.628
15 0.07 1.786 0.067 1.709 0.071 1.803 0.07 1.786 0.057 1.45
16 0.063 1.588 0.06 1.519 0.064 1.626 0.063 1.588 0.051 1.29
17 0.056 1.43 0.054 1.367 0.058 1.473 0.056 1.427 0.045 1.151
18 0.05 1.27 0.048 1.214 0.052 1.321 0.05 1.27 0.04 1.024
19 0.044 1.113 0.042 1.062 0.046 1.168 0.044 1.11 0.036 0.912
20 0.038 0.953 0.036 0.912 0.04 1.016 0.038 0.953 0.032 0.813
21 0.034 0.874 0.033 0.836 0.037 0.94 0.034 0.874 0.029 0.724
22 0.031 0.795 0.03 0.759 0.034 0.864 0.031 0.792 0.025 0.643
23 0.028 0.714 0.027 0.683 0.031 0.787 0.028 0.714 0.023 0.574
24 0.025 0.635 0.024 0.607 0.028 0.711 0.025 0.635 0.02 0.511
25 0.022 0.556 0.021 0.531 0.025 0.635 0.022 0.556 0.018 0.455
26 0.019 0.478 0.018 0.455 0.022 0.559 0.019 0.475 0.016 0.404
27 0.017 0.437 0.016 0.417 0.02 0.508 0.017 0.437 0.014 0.361
28 0.016 0.396 0.015 0.378 0.019 0.483 0.016 0.396 0.013 0.32
29 0.014 0.358 0.014 0.343 0.017 0.432 0.014 0.358 0.011 0.287
30 0.013 0.318 0.012 0.305 0.016 0.406 0.013 0.318 0.01 0.254
31 0.011 0.277 0.011 0.267 0.011 0.277 0.009 0.226
32 0.01 0.259 0.01 0.246 0.01 0.259 0.008 0.203
33 0.009 0.239 0.009 0.229 0.009 0.239 0.007 0.18
34 0.009 0.218 0.008 0.208 0.009 0.218 0.006 0.16
35 0.008 0.198 0.008 0.191 0.008 0.198 0.006 0.142
36 0.007 0.178 0.007 0.17 0.007 0.178 0.005 0.127
37 0.007 0.168 0.006 0.163 0.007 0.168 0.005 0.114
38 0.006 0.16 0.006 0.152 0.006 0.157 0.004 0.102
39 0.006 0.15
40 0.006 0.14
41 0.005 0.135
42 0.005 0.13
43 0.005 0.124
44 0.005 0.119

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