We use steel in several aspects of life. We use metal to build roofs, equipment, machines, computers, hinges, door locks, and many more. Almost everything around us these days has its part of its component. For example, a high-rise building uses metal for its internal structure.
Everywhere we look, we see it as a part of our life. However, it does not simply come in one type. Different applications require different thicknesses, which we refer to as metal gauges.
Summary
The sheet metal thickness chart is the easiest way to convert gauge to inches or mm. From it, you can see the following along with other things such as weight & conversion to mm:
- 7 gauge stainless steel has a thickness of 0.1875″.
- 10 gauge stainless steel has a thickness of 0.1406.”
- 11 gauge stainless steel has a thickness of 0.1250″.
Sheet Metal Thickness Chart
The table below shows the sheet metal thickness chart to make sure you get the right products. We have these in millimeters and inches, so you do not have to convert from gauge to mm or to inches. It’s no different from copper wire and PVC pipe having their own standards and specifications.
The volume and material will influence the weight.
Standard Steel
| Gauge | Thickness (inch) | Thickness (mm) | Weight per Area | |
| lb./ft² | kg/m² | |||
| 3 | 0.2391 | 6.073 | 9.754 | 47.624 |
| 4 | 0.2242 | 5.695 | 9.146 | 44.656 |
| 5 | 0.2092 | 5.314 | 8.534 | 41.668 |
| 6 | 0.1943 | 4.935 | 7.927 | 38.701 |
| 7 | 0.1793 | 4.554 | 7.315 | 35.713 |
| 8 | 0.1644 | 4.176 | 6.707 | 32.745 |
| 9 | 0.1495 | 3.797 | 6.099 | 29.777 |
| 10 | 0.1345 | 3.416 | 5.487 | 26.790 |
| 11 | 0.1196 | 3.038 | 4.879 | 23.822 |
| 12 | 0.1046 | 2.657 | 4.267 | 20.834 |
| 13 | 0.0897 | 2.278 | 3.659 | 17.866 |
| 14 | 0.0747 | 1.897 | 3.047 | 14.879 |
| 15 | 0.0673 | 1.709 | 2.746 | 13.405 |
| 16 | 0.0598 | 1.519 | 2.440 | 11.911 |
| 17 | 0.0538 | 1.367 | 2.195 | 10.716 |
| 18 | 0.0478 | 1.214 | 1.950 | 9.521 |
| 19 | 0.0418 | 1.062 | 1.705 | 8.326 |
| 20 | 0.0359 | 0.912 | 1.465 | 7.151 |
| 21 | 0.0329 | 0.836 | 1.342 | 6.553 |
| 22 | 0.0299 | 0.759 | 1.220 | 5.955 |
| 23 | 0.0269 | 0.683 | 1.097 | 5.358 |
| 24 | 0.0239 | 0.607 | 0.975 | 4.760 |
| 25 | 0.0209 | 0.531 | 0.853 | 4.163 |
| 26 | 0.0179 | 0.455 | 0.730 | 3.565 |
| 27 | 0.0164 | 0.417 | 0.669 | 3.267 |
| 28 | 0.0149 | 0.378 | 0.608 | 2.968 |
| 29 | 0.0135 | 0.343 | 0.551 | 2.689 |
| 30 | 0.0120 | 0.305 | 0.490 | 2.390 |
| 31 | 0.0105 | 0.267 | 0.428 | 2.091 |
| 32 | 0.0097 | 0.246 | 0.396 | 1.932 |
| 33 | 0.0090 | 0.229 | 0.367 | 1.793 |
| 34 | 0.0082 | 0.208 | 0.335 | 1.633 |
| 35 | 0.0075 | 0.191 | 0.306 | 1.494 |
| 36 | 0.0067 | 0.170 | 0.273 | 1.335 |
| 37 | 0.0064 | 0.163 | 0.261 | 1.275 |
| 38 | 0.0060 | 0.152 | 0.245 | 1.195 |
Stainless Steel
| Thickness | Weight per Area | |||
| Gauge | in | mm | lb./ft² | kg/m² |
| 0000000 | 0.5000 | 12.700 | 20.808 | 101.594 |
| 000000 | 0.4686 | 11.902 | 19.501 | 95.213 |
| 00000 | 0.4375 | 11.113 | 18.207 | 88.894 |
| 0000 | 0.4063 | 10.320 | 16.909 | 82.555 |
| 000 | 0.3750 | 9.525 | 15.606 | 76.195 |
| 00 | 0.3438 | 8.733 | 14.308 | 69.856 |
| 0 | 0.3125 | 7.938 | 13.005 | 63.496 |
| 1 | 0.2813 | 7.145 | 11.707 | 57.157 |
| 2 | 0.2656 | 6.746 | 11.053 | 53.966 |
| 3 | 0.2500 | 6.350 | 10.404 | 50.797 |
| 4 | 0.2344 | 5.954 | 9.755 | 47.627 |
| 5 | 0.2187 | 5.555 | 9.101 | 44.437 |
| 6 | 0.2031 | 5.159 | 8.452 | 41.267 |
| 7 | 0.1875 | 4.763 | 7.803 | 38.098 |
| 8 | 0.1719 | 4.366 | 7.154 | 34.928 |
| 9 | 0.1562 | 3.967 | 6.500 | 31.738 |
| 10 | 0.1406 | 3.571 | 5.851 | 28.568 |
| 11 | 0.1250 | 3.175 | 5.202 | 25.398 |
| 12 | 0.1094 | 2.779 | 4.553 | 22.229 |
| 13 | 0.0937 | 2.380 | 3.899 | 19.039 |
| 14 | 0.0781 | 1.984 | 3.250 | 15.869 |
| 15 | 0.0703 | 1.786 | 2.926 | 14.284 |
| 16 | 0.0625 | 1.588 | 2.601 | 12.699 |
| 17 | 0.0562 | 1.427 | 2.339 | 11.419 |
| 18 | 0.0500 | 1.270 | 2.081 | 10.159 |
| 19 | 0.0437 | 1.110 | 1.819 | 8.879 |
| 20 | 0.0375 | 0.953 | 1.561 | 7.620 |
| 21 | 0.0344 | 0.874 | 1.432 | 6.990 |
| 22 | 0.0312 | 0.792 | 1.298 | 6.339 |
| 23 | 0.0281 | 0.714 | 1.169 | 5.710 |
| 24 | 0.0250 | 0.635 | 1.040 | 5.080 |
| 25 | 0.0219 | 0.556 | 0.911 | 4.450 |
| 26 | 0.0187 | 0.475 | 0.778 | 3.800 |
| 27 | 0.0172 | 0.437 | 0.716 | 3.495 |
| 28 | 0.0156 | 0.396 | 0.649 | 3.170 |
| 29 | 0.0141 | 0.358 | 0.587 | 2.865 |
| 30 | 0.0125 | 0.318 | 0.520 | 2.540 |
| 31 | 0.0109 | 0.277 | 0.454 | 2.215 |
| 32 | 0.0102 | 0.259 | 0.424 | 2.073 |
| 33 | 0.0094 | 0.239 | 0.391 | 1.910 |
| 34 | 0.0086 | 0.218 | 0.358 | 1.747 |
| 35 | 0.0078 | 0.198 | 0.325 | 1.585 |
| 36 | 0.0070 | 0.178 | 0.291 | 1.422 |
| 37 | 0.0066 | 0.168 | 0.275 | 1.341 |
| 38 | 0.0062 | 0.157 | 0.258 | 1.260 |
Galvanized Steel
| Thickness | Weight per Area | |||
| Gauge | in | mm | lb/ft² | kg/m² |
| 8 | 0.1681 | 4.270 | 6.858 | 33.482 |
| 9 | 0.1532 | 3.891 | 6.250 | 30.514 |
| 10 | 0.1382 | 3.510 | 5.638 | 27.527 |
| 11 | 0.1233 | 3.132 | 5.030 | 24.559 |
| 12 | 0.1084 | 2.753 | 4.422 | 21.591 |
| 13 | 0.0934 | 2.372 | 3.810 | 18.603 |
| 14 | 0.0785 | 1.994 | 3.202 | 15.636 |
| 15 | 0.0710 | 1.803 | 2.896 | 14.142 |
| 16 | 0.0635 | 1.613 | 2.590 | 12.648 |
| 17 | 0.0575 | 1.461 | 2.346 | 11.453 |
| 18 | 0.0516 | 1.311 | 2.105 | 10.278 |
| 19 | 0.0456 | 1.158 | 1.860 | 9.083 |
| 20 | 0.0396 | 1.006 | 1.615 | 7.888 |
| 21 | 0.0366 | 0.930 | 1.493 | 7.290 |
| 22 | 0.0336 | 0.853 | 1.371 | 6.692 |
| 23 | 0.0306 | 0.777 | 1.248 | 6.095 |
| 24 | 0.0276 | 0.701 | 1.126 | 5.497 |
| 25 | 0.0247 | 0.627 | 1.008 | 4.920 |
| 26 | 0.0217 | 0.551 | 0.885 | 4.322 |
| 27 | 0.0202 | 0.513 | 0.824 | 4.023 |
| 28 | 0.0187 | 0.475 | 0.763 | 3.725 |
| 29 | 0.0172 | 0.437 | 0.702 | 3.426 |
| 30 | 0.0157 | 0.399 | 0.640 | 3.127 |
| 31 | 0.0142 | 0.361 | 0.579 | 2.828 |
| 32 | 0.0134 | 0.340 | 0.547 | 2.669 |
However, we must note that the thickness may change according to the steel type. For example, a size three in standard steel is 0.2391 inches thick, while a three in stainless steel is 0.2500 inches. The difference is minimal but could make or break it in actual application. Another example is between the size 38 standard and stainless steel. The former is 0.0060 inches thick, while the latter is 0.0062 inches. Again, the difference is very minimal.
Welding requires knowledge and awareness. You might need to stick two metal sheets together, so you will need to know more about welding. A MIG vs. TIG welding article should help you get a jumpstart.
Easy tools to measure
Here’s a tool that makes it easy for you to figure out what you have rather than having to consult a chart. Otherwise, scroll down to check out the chart.
Table could not be displayed.Pimoys
Pros
- The round tool works great for wire & steel.
- It’s sturdier than we anticipated.
- Engraved numbers that are colored in
- Good value
Cons
- The edges are somewhat sharp.
DGOL
Pros
- It’s great for steel metal.
- Very handy
- Nice that it can attach to the key ring.
Cons
- It does not measure wire.
- It doesn’t feel quite as durable.
- The round device above measures more gauges.
Table of Contents
- Sheet Metal Thickness Chart
- Standard Steel
- Stainless Steel
- Galvanized Steel
- Easy tools to measure
- What gauge is thicker?
What does gauge mean?
A sheet metal gauge, or simply a metal gauge, refers to the thickness of a specific material, which is steel in this case. The standard system expresses it in numbers, where a higher number means a thinner material, and a lower number means a thicker one.
Its weight is 41.82 lbs per square foot per inch of thickness, which we use to express weight per square foot. It is a standard value for the sheet metal gauge chart, which is different for brass and aluminum. For example, an eight sheet has a thickness of 0.1644 inches. Its weight will be 41.82 * 0.1644 inches = 6.875 lbs per square foot.
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In the United States, they use inches and feet to measure. For sheet metal thickness, they use the gauge, which is a dimensionless number. Larger numbers denote a thinner sheet, while smaller numbers denote a thicker sheet.
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What gauge is thicker?
Most people would think a higher number means a thicker material. However, it does not hold with steel gauge thickness. Amp wires come in different sizes too, which is comparable with steel.
From 10 to 18, the thickest is the 10, and the thinnest is the 18. If we look at the measurements, the increments are minimal. For example, a size ten standard steel is 0.1345 inches, while a size 11 is 0.1196 inches. It does not imply there is not much difference in its strength. The former is significantly more durable than the latter despite a very minimal thickness increase.
The following section shows a table of all the measurements you need. The weight per area is also available for your convenience.
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