Aluminum Gauge Thickness Chart
Reference chart for aluminum gauge thickness in both inches and millimeters. Use this chart for quick conversions and reference when specifying material thickness for your sheet metal projects.
Aluminum Gauge Thickness Reference
Gauge Number | Inches | MM |
---|---|---|
7 | 0.144 | 3.67 |
8 | 0.129 | 3.26 |
9 | 0.114 | 2.91 |
10 | 0.102 | 2.59 |
11 | 0.091 | 2.31 |
12 | 0.081 | 2.05 |
14 | 0.064 | 1.63 |
16 | 0.051 | 1.29 |
18 | 0.040 | 1.02 |
20 | 0.032 | 0.81 |
22 | 0.025 | 0.64 |
24 | 0.020 | 0.51 |
26 | 0.016 | 0.41 |
28 | 0.013 | 0.32 |
30 | 0.010 | 0.26 |
Understanding Aluminum Gauge Thickness
Gauge is a standard unit for measuring the thickness of aluminum sheets. Lower gauge numbers indicate thicker materials, while higher gauge numbers represent thinner sheets.
Gauges vary from material to material (i.e. 12 GA Aluminum is not the same as 12 GA Stainless Steel).
Common Aluminum Gauge Applications
12 Gauge Aluminum is 2.053 mm (0.08081 in) thick. It's used for heavy-duty applications, structures, and frames.
14 Gauge Aluminum is 1.628 mm (0.06408 in) thick. It's used for medium-duty applications, enclosures, housings.
16 Gauge Aluminum is 1.291 mm (0.05082 in) thick. It's used for light-duty applications, cabinets, covers.
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