If you want to know how thick is 8 gauge aluminum sheet, you need to understand what the word ‘gauge‘ means firstly.
Sheet metal gauges/gauges are indications of the standard thickness of specific sheet metal materials such as steel, aluminum, and copper.
In general, the higher the gauge number, the thinner the metal (does not apply to zinc).
Gauges are independent of those metric measurement systems, and the gauge conversion table can be used to determine the actual thickness of sheet metal in inches or millimeters.

8 gauge aluminum sheet thickness
If you want to know how many mm or inches different gauges represent, you need to consult the metal gauge chart.
A metal gauge chart will contain the gauge number and corresponding thickness in inches or millimeters, and you can use the chart to confirm specific metal thicknesses.
Also, the same gauge numbers for different metal materials represent different thicknesses. For example, 19-gauge stainless steel is 0.0418 inches thick, and 19-gauge aluminum is 0.0456 inches thick.

sheet aluminum thickness measurement
So we can quickly know the specific thickness of the 8 gauge aluminum sheet through the specification gauge table.
| Thickness | Weight Per Area | |||
| Gauge Number | in | mm | lb/ft² | kg/m² |
| 000000 | 0.5800 | 14.732 | 8.185 | 39.962 |
| 00000 | 0.5165 | 13.119 | 7.289 | 35.587 |
| 0000 | 0.4600 | 11.684 | 6.492 | 31.694 |
| 000 | 0.4096 | 10.404 | 5.780 | 28.222 |
| 00 | 0.3648 | 9.266 | 5.148 | 25.135 |
| 0 | 0.3249 | 8.252 | 4.585 | 22.386 |
| 1 | 0.2893 | 7.348 | 4.083 | 19.933 |
| 2 | 0.2576 | 6.543 | 3.635 | 17.749 |
| 3 | 0.2294 | 5.827 | 3.237 | 15.806 |
| 4 | 0.2043 | 5.189 | 2.883 | 14.076 |
| 5 | 0.1819 | 4.620 | 2.567 | 12.533 |
| 6 | 0.1620 | 4.115 | 2.286 | 11.162 |
| 7 | 0.1443 | 3.665 | 2.036 | 9.942 |
| 8 | 0.1285 | 3.264 | 1.813 | 8.854 |
| 9 | 0.1144 | 2.906 | 1.614 | 7.882 |
| 10 | 0.1019 | 2.588 | 1.438 | 7.021 |
| 11 | 0.0907 | 2.304 | 1.280 | 6.249 |
| 12 | 0.0808 | 2.052 | 1.140 | 5.567 |
| 13 | 0.0720 | 1.829 | 1.016 | 4.961 |
| 14 | 0.0641 | 1.628 | 0.905 | 4.417 |
| 15 | 0.0571 | 1.450 | 0.806 | 3.934 |
| 16 | 0.0508 | 1.290 | 0.717 | 3.500 |
| 17 | 0.0453 | 1.151 | 0.639 | 3.121 |
| 18 | 0.0403 | 1.024 | 0.569 | 2.777 |
| 19 | 0.0359 | 0.912 | 0.507 | 2.474 |
| 20 | 0.0320 | 0.813 | 0.452 | 2.205 |
| 21 | 0.0285 | 0.724 | 0.402 | 1.964 |
| 22 | 0.0253 | 0.643 | 0.357 | 1.743 |
| 23 | 0.0226 | 0.574 | 0.319 | 1.557 |
| 24 | 0.0201 | 0.511 | 0.284 | 1.385 |
| 25 | 0.0179 | 0.455 | 0.253 | 1.233 |
| 26 | 0.0159 | 0.404 | 0.224 | 1.096 |
| 27 | 0.0142 | 0.361 | 0.200 | 0.978 |
| 28 | 0.0126 | 0.320 | 0.178 | 0.868 |
| 29 | 0.0113 | 0.287 | 0.159 | 0.779 |
| 30 | 0.0100 | 0.254 | 0.141 | 0.689 |
| 31 | 0.0089 | 0.226 | 0.126 | 0.613 |
| 32 | 0.0080 | 0.203 | 0.113 | 0.551 |
| 33 | 0.0071 | 0.180 | 0.100 | 0.489 |
| 34 | 0.0063 | 0.160 | 0.089 | 0.434 |
| 35 | 0.0056 | 0.142 | 0.079 | 0.386 |
| 36 | 0.0050 | 0.127 | 0.071 | 0.345 |
| 37 | 0.0045 | 0.114 | 0.064 | 0.310 |
| 38 | 0.0040 | 0.102 | 0.056 | 0.276 |
| 39 | 0.0035 | 0.089 | 0.049 | 0.241 |
| 40 | 0.0031 | 0.079 | 0.044 | 0.214 |
From the above table, we can easily query the specific thickness of 8 gauge aluminum sheet.
8 gauge aluminum sheet is 0.1285 inches thick.
8 ga approximate thickness in millimeters is 3.264 mm.It can be seen that,the thickness of 8 gauge aluminum sheet and 3mm aluminum sheet is very close.

3mm aluminum sheet
The weight per unit area of the 8 ga aluminum sheet can also be seen in pounds per square foot and kilograms per square meter.
| weight of 8 gauge aluminum(ounces) | weight of 8 gauge aluminum(pounds) | weight of 8 gauge aluminum(KG) | weight of 8 gauge aluminum(KG/m²) |
| 29.008 oz/ft² | 1.813 lb/ft² | 0.8224 kg/ft² | 8.854 kg/m² |
Huawei Aluminum is a well-known aluminum plate company in China. Our aluminum sheet production factory is over 100,000 square meters and has accumulated more than 20 years of production experience.

8 gauge aluminum sheet package
Our customers are all over the world, such as South Korea, Thailand, Indonesia, Turkey, the United States, Brazil, Colombia, Spain, Switzerland, etc.
We not only supply a large number of 8 gauge aluminum sheets, but also provide aluminum sheets of popular metal gauge such as 11 gauge, 12 gauge, 14 gauge, 16 gauge, 18 gauge, 30 gauge, etc.
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