Sheet Metal Gauge Thickness Chart
Galvanized Steel, Stainless Steel, Aluminum Sheet Gauge Size to mm/inch Sheet Metal Gauge Thickness Chart
The Sheet metal commonly used thickness units are inches, millimeters and Gauge; European and American countries generally use Gauge and inch to indicate thickness; the commonly used international standard thickness unit of sheet metal is generally millimeters.
What is Gauge?
Gauges are used to specify the thickness of the sheet metal. Gauge is neither standard nor metric, and its values are independent of those measurement systems. Generally speaking, for the same material, the higher the number, the thinner the sheet of metal.
Gauge is different from inches in that there is no conversion formula. Even if the non-ferrous metal plate and steel plate are the same Ga., the thickness is actually different.
Sheet Metal Gauge Thickness Conversion Chart
Below is a table of sheet metal specifications shown in millimeters per inch, including standard steel, aluminum and galvanized steel
Sheet Steel Metal Gauge Thickness Size Chart In Inch
| Gauge (Ga.) | Standard Steel (Inch) | galvanized sheet metal thickness (Inch) | Aluminum Guage Thickness (Inch) | Stainless Guage Thickness (Inch) |
| 3 | 0.2391 | 0.2294 | 0.25 | |
| 4 | 0.2242 | 0.2043 | 0.2344 | |
| 5 | 0.2092 | 0.1819 | 0.2187 | |
| 6 | 0.1943 | 0.162 | 0.2031 | |
| 7 | 0.1793 | 0.1443 | 0.1875 | |
| 8 | 0.1644 | 0.1285 | 0.1719 | |
| 9 | 0.1495 | 0.1532 | 0.1144 | 0.1563 |
| 10 | 0.1345 | 0.1382 | 0.1019 | 0.1406 |
| 11 | 0.1196 | 0.1233 | 0.0907 | 0.1250 |
| 12 | 0.1046 | 0.1084 | 0.0808 | 0.1094 |
| 13 | 0.0897 | 0.0934 | 0.072 | 0.094 |
| 14 | 0.0747 | 0.0785 | 0.0641 | 0.0781 |
| 15 | 0.0673 | 0.071 | 0.0571 | 0.0703 |
| 16 | 0.0598 | 0.0635 | 0.0508 | 0.0625 |
| 17 | 0.0538 | 0.0575 | 0.0453 | 0.0562 |
| 18 | 0.0478 | 0.0516 | 0.0403 | 0.0500 |
| 19 | 0.0418 | 0.0456 | 0.0359 | 0.0437 |
| 20 | 0.0359 | 0.0396 | 0.032 | 0.0375 |
| 21 | 0.0329 | 0.0366 | 0.0285 | 0.0344 |
| 22 | 0.0299 | 0.0336 | 0.0253 | 0.0312 |
| 23 | 0.0269 | 0.0306 | 0.0226 | 0.0281 |
| 24 | 0.0239 | 0.0276 | 0.0201 | 0.025 |
| 25 | 0.0209 | 0.0247 | 0.0179 | 0.0219 |
| 26 | 0.0179 | 0.0217 | 0.0159 | 0.0187 |
| 27 | 0.0164 | 0.0202 | 0.0142 | 0.0172 |
| 28 | 0.0149 | 0.0187 | 0.0126 | 0.0156 |
| 29 | 0.0135 | 0.0172 | 0.0113 | 0.0141 |
| 30 | 0.012 | 0.0157 | 0.01 | 0.0125 |
| 31 | 0.0105 | 0.0142 | 0.0089 | 0.0109 |
| 32 | 0.0097 | 0.0134 | 0.008 | 0.0102 |
| 33 | 0.009 | 0.0071 | 0.0094 | |
| 34 | 0.0082 | 0.0063 | 0.0086 | |
| 35 | 0.0075 | 0.0056 | 0.0086 | |
| 36 | 0.0067 | 0.0078 |
Sheet Metal Gauge Thickness Chart in mm
| Gauge (Ga.) | Standard Steel (mm) | galvanized sheet metal thickness (mm) | Aluminum Guage Thickness (mm) | Stainless Guage Thickness (mm) |
| 3 | 6.07314 | 5.82676 | ||
| 4 | 5.69468 | 5.18922 | 5.95 | |
| 5 | 5.31368 | 4.62026 | 5.55 | |
| 6 | 4.93522 | 4.1148 | 5.15 | |
| 7 | 4.55422 | 3.66522 | 4.76 | |
| 8 | 4.17576 | 3.2639 | 4.37 | |
| 9 | 3.7973 | 3.89128 | 2.90576 | 3.97 |
| 10 | 3.4163 | 3.51028 | 2.58826 | 3.57 |
| 11 | 3.03784 | 3.13182 | 2.30378 | 3.18 |
| 12 | 2.65684 | 2.75336 | 2.05232 | 2.78 |
| 13 | 2.27838 | 2.37236 | 1.8288 | 2.40 |
| 14 | 1.89738 | 1.9939 | 1.62814 | 1.98 |
| 15 | 1.70942 | 1.8034 | 1.45034 | 1.80 |
| 16 | 1.51892 | 1.6129 | 1.29032 | 1.59 |
| 17 | 1.36652 | 1.4605 | 1.15062 | 1.40 |
| 18 | 1.21412 | 1.31064 | 1.02362 | 1.27 |
| 19 | 1.06172 | 1.15824 | 0.91186 | 1.1 |
| 20 | 0.91186 | 1.00584 | 0.8128 | 0.95 |
| 21 | 0.83566 | 0.92964 | 0.7239 | 0.86 |
| 22 | 0.75946 | 0.85344 | 0.64262 | 0.79 |
| 23 | 0.68326 | 0.77724 | 0.57404 | 0.71 |
| 24 | 0.60706 | 0.7004 | 0.51054 | 0.64 |
| 25 | 0.53086 | 0.62738 | 0.45466 | 0.56 |
| 26 | 0.45466 | 0.55118 | 0.40386 | 0.48 |
| 27 | 0.41656 | 0.51308 | 0.36068 | 0.43 |
| 28 | 0.37846 | 0.47498 | 0.32004 | 0.41 |
| 29 | 0.3429 | 0.43688 | 0.28702 | 0.36 |
| 30 | 0.3048 | 0.39878 | 0.254 | 0.33 |
| 31 | 0.2667 | 0.36068 | 0.22606 | 0.27 |
| 32 | 0.24638 | 0.34036 | 0.2032 | 0.25 |
| 33 | 0.2286 | 0.18034 | 0.23 | |
| 34 | 0.20828 | 0.16002 | 0.21 | |
| 35 | 0.1905 | 0.14224 | 0.19 | |
| 36 | 0.17018 | 0.16 |
Sheet Metal Gauge Thickness Chart
sheet metal gauge thickness chart to Inch
sheet metal gauge thickness chart to mm
When the sheet metal and the steel sheet have the same gauge, the actual thickness is different and the sheet and pipes are also different too.
FAQ:
How many Inch is 20 gauge?
Standard Steel: 20 Gauge = 0.0359 inches
Galvanized Steel: 20 Gauge = 0.0396 inches
Stainless Steel: 20 Gauge = 0.032 inches
Aluminum: 20 Gauge = 0.0375 inches
What is the thickness of 18 gauge in mm?
standard steel: 1.214 mm
GALVANIZED steel: 1.31 mm
ALUMINUM: 1.024 mm
Stainless Steel: 1.27 mm
Which is thicker 28 or 30 gauge of galvanized steel coil?
28 gauge is thicker. 28 gauge is 0.47mm, 30 gauge is 0.39mm.
Which is thickeness 6 gauge and 16ga steel thickness in mm?
6 gauge is 4.935mm of steel thickness 16 gauge is 1.51mm of steel thickiness
What are the other types of gauges?
Wire gauge (AWG, BWG and SWG) and tube gauge (AWG, BWG and SWG)
