Metal Thickness (Gauge)

Metal sheet thickness is measured in gauge.  The table below provides conversion to inches.  Wire/conductor sizes are also measured in gauge and are equivalent to the non-ferrous thicknesses listed below.

AWG

Gauge

Non-Ferrous Metal
Alum, Brass, etc.

Inches
Galvanized
Steel

Inches
Standard
Steel

Inches
Stainless
Steel

Inches
1 .2893 .2812
2 .2576     .2656
3 .2294   .2391 .2500
4 .2043   .2242 .2344
5 .1819   .2092 .2187
6 .1620   .1943 .2031
7 .1443   .1793 .1875
8 .1285 .1680 .1644 .1719
9 .1144 .1532 .1495 .1562
10 .1019 .1382 .1345 .1406
11 .0907 .1233 .1196 .1250
12 .0808 .1084 .1046 .1094
13 .0720 .0934 .0897 .0937
14 .0641 .0785 .0747 .0781
15 .0571 .0710 .0673 .0703
16 .0508 .0635 .0598 .0625
17 .0453 .0575 .0538 .0562
18 .0403 .0516 .0478 .0500
19 .0359 .0456 .0418 .0437
20 .0320 .0396 .0359 .0375
21 .0285 .0366 .0329 .0344
22 .0253 .0336 .0299 .0312
23 .0226 .0306 .0269 .0281
24 .0201 .0276 .0239 .0250
25 .0179 .0247 .0209 .0219
26 .0159 .0217 .0179 .0187
27 .0142 .0202 .0164 .0172
28 .0126 .0187 .0149 .0156
29 .0113 .0172 .0135 .0141
30 .0100 .0157 .0120 .0125

 


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