| Gauge Number | Steel Weight in pounds per square foot | US Standard Gauge: thickness in inches | Manufacturers' Standard: thickness in inches | Galvanized Sheet: weight in lbs/sq ft | Stainless Steel: weight in lbs/sq ft |
| 7/0 | 20.00 | 0.5000 | ..... | ..... | ..... |
| 6/0 | 18.75 | 0.4687 | ..... | ..... | ..... |
| 5/0 | 17.50 | 0.4375 | ..... | ..... | ..... |
| 4/0 | 16.25 | 0.4062 | ..... | ..... | ..... |
| 3/0 | 15.00 | 0.3750 | ..... | ..... | ..... |
| 2/0 | 13.75 | 0.3437 | ..... | ..... | ..... |
| 0 | 12.50 | 0.3125 | ..... | ..... | ..... |
| 1 | 11.25 | 0.2812 | ..... | ..... | ..... |
| 2 | 10.62 | 0.2656 | ..... | ..... | ..... |
| 3 | 10.00 | 0.2500 | 0.2391 | ..... | ..... |
| 4 | 9.37 | 0.2344 | 0.2242 | ..... | ..... |
| 5 | 8.75 | 0.2187 | 0.2092 | ..... | ..... |
| 6 | 8.12 | 0.2031 | 0.1943 | ..... | ..... |
| 7 | 7.50 | 0.1875 | 0.1793 | ..... | ..... |
| 8 | 6.87 | 0.1719 | 0.1644 | ..... | ..... |
| 9 | 6.25 | 0.1562 | 0.1495 | ..... | ..... |
| 10 | 5.62 | 0.1406 | 0.1345 | 5.7812 | 5.7937 |
| 11 | 5.00 | 0.1250 | 0.1196 | 5.1562 | 5.1500 |
| 12 | 4.37 | 0.1094 | 0.1046 | 4.5312 | 4.5063 |
| 13 | 3.75 | 0.0937 | 0.0897 | 3.9062 | 3.8625 |
| 14 | 3.12 | 0.0781 | 0.0747 | 3.2812 | 3.2187 |
| 15 | 2.81 | 0.0703 | 0.0673 | 2.9687 | 2.8968 |
| 16 | 2.50 | 0.0625 | 0.0598 | 2.6562 | 2.5750 |
| 17 | 2.25 | 0.0562 | 0.0538 | 2.4062 | 2.3175 |
| 18 | 2.00 | 0.0500 | 0.0478 | 2.1562 | 2.0600 |
| 19 | 1.75 | 0.0437 | 0.0418 | 1.9062 | 1.8025 |
| 20 | 1.50 | 0.0375 | 0.0359 | 1.6562 | 1.5450 |
| 21 | 1.37 | 0.0344 | 0.0329 | 1.5312 | 1.4160 |
| 22 | 1.25 | 0.0312 | 0.0299 | 1.4062 | 1.2875 |
| 23 | 1.12 | 0.0281 | 0.0269 | 1.2812 | 1.1587 |
| 24 | 1.00 | 0.0250 | 0.0239 | 1.1562 | 1.0300 |
| 25 | 0.875 | 0.0219 | 0.0209 | 1.0312 | 0.9013 |
| 26 | 0.750 | 0.0187 | 0.0179 | 0.9062 | 0.7725 |
| 27 | 0.687 | 0.0172 | 0.0164 | 0.8437 | 0.7081 |
| 28 | 0.625 | 0.0156 | 0.0149 | 0.7812 | 0.6438 |
| 29 | 0.562 | 0.0141 | 0.0135 | 0.7187 | 0.5794 |
| 30 | 0.500 | 0.0125 | 0.0120 | 0.6562 | 0.5150 |
| 31 | 0.437 | 0.0109 | 0.0105 | ..... | ..... |
| 32 | 0.406 | 0.0102 | 0.0097 | ..... | ..... |
| 33 | 0.375 | 0.0094 | 0.0090 | ..... | ..... |
| 34 | 0.344 | 0.0086 | 0.0082 | ..... | ..... |
| 35 | 0.312 | 0.0078 | 0.0075 | ..... | ..... |
| 36 | 0.281 | 0.0070 | 0.0067 | ..... | ..... |
| 37 | 0.266 | 0.0066 | 0.0064 | ..... | ..... |
| 38 | 0.250 | 0.0062 | 0.0060 | ..... | ..... |
| 39 | 0.234 | 0.0059 | ..... | ..... | ..... |
| 40 | 0.219 | 0.0055 | ..... | ..... | ..... |
| 41 | 0.211 | 0.0053 | ..... | ..... | ..... |
| 42 | 0.203 | 0.0051 | ..... | ..... | ..... |
| 43 | 0.195 | 0.0049 | ..... | ..... | ..... |
| 44 | 0.187 | 0.0047 | ..... | ..... | ..... |
Also see forge, gauge, welding,wire, a chart of wire gauges, and the names of various metals, techniques, etc.
