Sheet Metal - Gauge

Gauge

Manufacturers' Standard Gauge for Sheet Steel is based on an average weight of 41.82 lb (18.96 kg) per square foot per inch thick. Gauge is defined differently in Ferrous (Iron-based) and Non-Ferrous metals (e.g. aluminium and brass).

Standard sheet metal gauges
Gauge	U.S. Standard for Sheet and Plate Iron and Steel decimal inch (mm)	Steel inch (mm)	Galvanized steel inch (mm)	Stainless steel inch (mm)	Aluminium inch (mm)	Zinc inch (mm)
0000000	0.5000 (12.70)	......	......	......	......	......
000000	0.4688 (11.91)	......	......	......	......	......
00000	0.4375 (11.11)	......	......	......	......	......
0000	0.4063 (10.32)	......	......	......	......	......
000	0.3750 (9.53)	......	......	......	......	......
00	0.3438 (8.73)	......	......	......	......	......
0	0.3125 (7.94)	......	......	......	......	......
1	0.2813 (7.15)	......	......	......	......	......
2	0.2656 (6.75)	......	......	......	......	......
3	0.2500 (6.35)	0.2391 (6.07)	......	......	......	0.006 (0.15)
4	0.2344 (5.95)	0.2242 (5.69)	......	......	......	0.008 (0.20)
5	0.2188 (5.56)	0.2092 (5.31)	......	......	......	0.010 (0.25)
6	0.2031 (5.16)	0.1943 (4.94)	......	......	0.162 (4.1)	0.012 (0.30)
7	0.1875 (4.76)	0.1793 (4.55)	......	0.1875 (4.76)	0.1443 (3.67)	0.014 (0.36)
8	0.1719 (4.37)	0.1644 (4.18)	0.1681 (4.27)	0.1719 (4.37)	0.1285 (3.26)	0.016 (0.41)
9	0.1563 (3.97)	0.1495 (3.80)	0.1532 (3.89)	0.1563 (3.97)	0.1144 (2.91)	0.018 (0.46)
10	0.1406 (3.57)	0.1345 (3.42)	0.1382 (3.51)	0.1406 (3.57)	0.1019 (2.59)	0.020 (0.51)
11	0.1250 (3.18)	0.1196 (3.04)	0.1233 (3.13)	0.1250 (3.18)	0.0907 (2.30)	0.024 (0.61)
12	0.1094 (2.78)	0.1046 (2.66)	0.1084 (2.75)	0.1094 (2.78)	0.0808 (2.05)	0.028 (0.71)
13	0.0938 (2.38)	0.0897 (2.28)	0.0934 (2.37)	0.094 (2.4)	0.072 (1.8)	0.032 (0.81)
14	0.0781 (1.98)	0.0747 (1.90)	0.0785 (1.99)	0.0781 (1.98)	0.0641 (1.63)	0.036 (0.91)
15	0.0703 (1.79)	0.0673 (1.71)	0.0710 (1.80)	0.07 (1.8)	0.057 (1.4)	0.040 (1.0)
16	0.0625 (1.59)	0.0598 (1.52)	0.0635 (1.61)	0.0625 (1.59)	0.0508 (1.29)	0.045 (1.1)
17	0.0563 (1.43)	0.0538 (1.37)	0.0575 (1.46)	0.056 (1.4)	0.045 (1.1)	0.050 (1.3)
18	0.0500 (1.27)	0.0478 (1.21)	0.0516 (1.31)	0.0500 (1.27)	0.0403 (1.02)	0.055 (1.4)
19	0.0438 (1.11)	0.0418 (1.06)	0.0456 (1.16)	0.044 (1.1)	0.036 (0.91)	0.060 (1.5)
20	0.0375 (0.95)	0.0359 (0.91)	0.0396 (1.01)	0.0375 (0.95)	0.0320 (0.81)	0.070 (1.8)
21	0.0344 (0.87)	0.0329 (0.84)	0.0366 (0.93)	0.034 (0.86)	0.028 (0.71)	0.080 (2.0)
22	0.0313 (0.80)	0.0299 (0.76)	0.0336 (0.85)	0.031 (0.79)	0.025 (0.64)	0.090 (2.3)
23	0.0281 (0.71)	0.0269 (0.68)	0.0306 (0.78)	0.028 (0.71)	0.023 (0.58)	0.100 (2.5)
24	0.0250 (0.64)	0.0239 (0.61)	0.0276 (0.70)	0.025 (0.64)	0.02 (0.51)	0.125 (3.2)
25	0.0219 (0.56)	0.0209 (0.53)	0.0247 (0.63)	0.022 (0.56)	0.018 (0.46)	......
26	0.0188 (0.48)	0.0179 (0.45)	0.0217 (0.55)	0.019 (0.48)	0.017 (0.43)	......
27	0.0172 (0.44)	0.0164 (0.42)	0.0202 (0.51)	0.017 (0.43)	0.014 (0.36)	......
28	0.0156 (0.40)	0.0149 (0.38)	0.0187 (0.47)	0.016 (0.41)	0.0126 (0.32)	......
29	0.0141 (0.36)	0.0135 (0.34)	0.0172 (0.44)	0.014 (0.36)	0.0113 (0.29)	......
30	0.0125 (0.32)	0.0120 (0.30)	0.0157 (0.40)	0.013 (0.33)	0.0100 (0.25)	......
31	0.0109 (0.28)	0.0105 (0.27)	0.0142 (0.36)	0.011 (0.28)	0.0089 (0.23)	......
32	0.0102 (0.26)	0.0097 (0.25)	......	......	......	......
33	0.0094 (0.24)	0.0090 (0.23)	......	......	......	......
34	0.0086 (0.22)	0.0082 (0.21)	......	......	......	......
35	0.0078 (0.20)	0.0075 (0.19)	......	......	......	......
36	0.0070 (0.18)	0.0067 (0.17)	......	......	......	......
37	0.0066 (0.17)	0.0064 (0.16)	......	......	......	......
38	0.0063 (0.16)	0.0060 (0.15)	......	......	......	......