Gauge in decimals of an inch
Use the chart provided below to convert standard gauge numbers in decimals of
an inch for sheet steel, strip and tubing, aluminum and stainless steel.
Gauge #
Sheet Steel
Strip & Tubing
Aluminum
Stainless Steel
5/0
4/0
3/0
2/0
-------------
.500
.454
.425
.380
.5165
.4600
.4096
.3648
.4375
.4062
.3750
.3437
0
1
2
3
4
5
---------.2391
.2242
.2092
.340
.300
.284
.259
.238
.220
.3249
.2893
.2576
.2294
.2043
.1819
.3125
.2812
.2656
.2500
.2344
.2187
6
7
8
9
10
11
.1943
.1793
.1644
.1495
.1345
.1196
.203
.180
.165
.148
.134
.120
.1620
.1443
.1285
.1144
.1019
.0907
.2031
.1875
.1719
.1562
.1406
.1250
12
13
14
15
16
17
.1046
.0897
.0747
.0673
.0598
.0538
.109
.095
.083
.072
.065
.058
.0808
.0720
.0641
.0571
.0508
.0453
.1094
.0937
.0781
.0703
.0625
.0562
18
19
20
21
22
23
.0478
.0418
.0359
.0329
.0299
.0269
.049
.042
.035
.032
.028
.025
.0403
.0359
.0320
.0285
.0253
.0226
.0500
.0437
.0375
.0344
.0312
.0281
24
25
26
27
28
29
.0239
.0209
.0179
.0164
.0149
.0135
.022
.020
.018
.016
.014
.013
.0201
.0179
.0159
.0142
.0126
.0113
.0250
.0219
.0187
.0172
.0156
.0141
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