Standard Sheet Metal Gauges
| Aluminium Electrical Steel | |||||
| Gauge | Steel[4] | Galvanized Steel | Stainless Steel | Aluminium | Electrical Steel |
| in (mm) | in (mm) | in (mm) | in (mm) | in (mm) | |
| 3 | 0.2391 (6.07) | - | - | - | - |
| 4 | 0.2242 (5.69) | - | - | - | - |
| 6 | 0.1943 (4.94) | - | - | 0.162 (4.1) | - |
| 7 | 0.1793 (4.55) | - | 0.1875 (4.76) | 0.1443 (3.67) | - |
| 8 | 0.1644 (4.18) | 0.1681 (4.27) | 0.1719 (4.37) | 0.1285 (3.26) | - |
| 9 | 0.1495 (3.80) | 0.1532 (3.89) | 0.1563 (3.97) | 0.1144 (2.91) | - |
| 10 | 0.1345 (3.42) | 0.1382 (3.51) | 0.1406 (3.57) | 0.1019 (2.59) | - |
| 11 | 0.1196 (3.04) | 0.1233 (3.13) | 0.1250 (3.18) | 0.0907 (2.30) | - |
| 12 | 0.1046 (2.66) | 0.1084 (2.75) | 0.1094 (2.78) | 0.0808 (2.05) | - |
| 13 | 0.0897 (2.28) | 0.0934 (2.37) | 0.094 (2.4) | 0.072 (1.8) | - |
| 14 | 0.0747 (1.90) | 0.0785 (1.99) | 0.0781 (1.98) | 0.0641 (1.63) | - |
| 15 | 0.0673 (1.71) | 0.0710 (1.80) | 0.07 (1.8) | 0.057 (1.4) | - |
| 16 | 0.0598 (1.52) | 0.0635 (1.61) | 0.0625 (1.59) | 0.0508 (1.29) | - |
| 17 | 0.0538 (1.37) | 0.0575 (1.46) | 0.056 (1.4) | 0.045 (1.1) | - |
| 18 | 0.0478 (1.21) | 0.0516 (1.31) | 0.0500 (1.27) | 0.0403 (1.02) | - |
| 19 | 0.0418 (1.06) | 0.0456 (1.16) | 0.044 (1.1) | 0.036 (0.91) | - |
| 20 | 0.0359 (0.91) | 0.0396 (1.01) | 0.0375 (0.95) | 0.0320 (0.81) | - |
| 21 | 0.0329 (0.84) | 0.0366 (0.93) | 0.034 (0.86) | 0.028 (0.71) | - |
| 22 | 0.0299 (0.76) | 0.0336 (0.85) | 0.031 (0.79) | 0.025 (0.64) | 0.0310 (0.787) |
| 23 | 0.0269 (0.68) | 0.0306 (0.78) | 0.028 (0.71) | 0.023 (0.58) | 0.0280 (0.711) |
| 24 | 0.0239 (0.61) | 0.0276 (0.70) | 0.025 (0.64) | 0.02 (0.51) | 0.0250 (0.64) |
| 25 | 0.0209 (0.53) | 0.0247 (0.63) | 0.022 (0.56) | 0.018 (0.46) | 0.0197 (0.50) |
| 26 | 0.0179 (0.45) | 0.0217 (0.55) | 0.019 (0.48) | 0.017 (0.43) | 0.0185 (0.47) |
| 27 | 0.0164 (0.42) | 0.0202 (0.51) | 0.017 (0.43) | 0.014 (0.36) | - |
| 28 | 0.0149 (0.38) | 0.0187 (0.47) | 0.016 (0.41) | 0.0126 (0.32) | - |
| 29 | 0.0135 (0.34) | 0.0172 (0.44) | 0.014 (0.36) | 0.0113 (0.29) | 0.0140 (0.35) |
| 30 | 0.0120 (0.30) | 0.0157 (0.40) | 0.013 (0.33) | 0.0100 (0.25) | 0.011 (0.27) |
| 31 | 0.0105 (0.27) | 0.0142 (0.36) | 0.011 (0.28) | 0.0089 (0.23) | 0.0100 (0.25) |
| 32 | 0.0097 (0.25) | - | - | - | - |
| 33 | 0.0090 (0.23) | - | - | - | 0.009 (0.23) |
| 34 | 0.0082 (0.21) | - | - | - | - |
| 35 | 0.0075 (0.19) | - | - | - | - |
| 36 | 0.0067 (0.17) | - | - | - | 0.007 (0.18) |
| 37 | 0.0064 (0.16) | - | - | - | - |
| 38 | 0.0060 (0.15) | - | - | - | 0.005 (0.127) |