Steel Gauge Thickness
Steel Gauge Thickness
Steel Gauge Thickness
Thickness
Gauge No.
fraction inch mm
6 13/64 .2031 5.16
7 3/16 .1875 4.76
8 11/64 .1719 4.37
9 5/32 .1563 3.97
10 9/64 .1406 3.57
11 1/8 .1250 3.18
12 7/64 .1094 2.78
13 3/32 .0938 2.38
14 5/64 .0781 1.98
15 - .0703 1.79
16 1/16 .0625 1.59
17 - .0563 1.43
18 - .0500 1.27
19 - .0438 1.11
20 - .0375 .953
21 - .0344 .873
22 1/32 .0313 .794
23 - .0218 .714
24 - .0250 .635
25 - .0219 .556
26 - .0188 .478
27 - .0172 .437
28 1/64 .0156 .396
29 - .0141 .358
30 - .0125 .318
31 - .0109 .277
32 - .0102 .259
33 - .0094 .239
34 - .0086 .218
35 - .0078 .198
Nonferrous Metal Gauges (aluminum)
vs. Ferrous Gauges (steel & stainless)
ALUMINUM STEEL
Gauge inch mm inch mm
3 .2294 5.827 .2391 6.073
4 .2043 5.189 .2242 5.695
5 .1819 4.620 .2092 5.314
6 .1620 4.115 .1943 4.935
7 .1443 3.665 .1793 4.554
8 .1285 3.264 .1644 4.176
9 .1144 2.906 .1495 3.797
10 .1019 2.588 .1345 3.416
11 .0907 2.304 .1196 3.030
12 .0808 2.052 .1046 2.657
13 .0720 1.829 .0897 2.278
14 .0641 1.628 .0747 1.897
15 .0571 1.450 .0673 1.709
16 .0508 1.290 .0598 1.519
17 .0453 1.151 .0538 1.367
18 .0403 1.024 .0478 1.214
19 .0359 0.912 .0418 1.062
20 .0320 0.813 .0359 0.912
21 .0285 0.724 .0329 0.836
22 .0253 0.643 .0299 0.759
23 .0226 0.574 .0269 0.683
24 .0201 0.511 .0239 0.607
25 .0179 0.455 .0209 0.531
26 .0159 0.404 .0179 0.455
27 .0142 0.361 .0164 0.417
28 .0126 0.320 .0149 0.378
29 .0113 0.287 .0135 0.343
30 .0100 0.254 .0120 0.305
31 .0089 0.226 .0105 0.267
32 .0080 0.203 .0097 0.246
33 .0071 0.180 .0090 0.229
34 .0063 0.160 .0082 0.208
35 .0056 0.142 .0075 0.191
Fraction Decimal Millimeter Conversion Table