Metal Thicknesses

NOTE: SOME VALUES ARE ROUNDED
Gauge No.
U.S. Standard Gauge
for Uncoated Hot and
Cold Rolled Sheets
(inches)
USA Steel Wire Gauge
(inches)
7/0
-
0.490
6/0
-
0.462
5/0
-
0.430
4/0
-
0.394
3/0
-
0.362
2/0
-
0.331
1/0
-
0.306
1
-
0.283
2
-
0.262
3
0.2391
0.244
4
0.2242
0.225
5
0.2092
0.207
6
0.1943
0.192
7
0.1793
0.192
8
0.1644
0.162
9
0.1495
0.148
10
0.1345
0.120
11
0.1196
0.120
12
0.1046
0.106
13
0.0897
0.092
14
0.0747
0.080
15
0.0673
0.072
16
0.0598
0.062
17
0.0538
0.054
18
0.0478
0.048
19
0.0418
0.041
20
0.0359
0.035
21
0.0329
-
22
0.0229
-
23
0.0269
-
24
0.0239
-
25
0.0209
-
26
0.0179
-
27
0.0164
-
28
0.0149
-
29
-
-
30
-
-

 

Fractions and their Decimal Equivalents

Fraction
Decimal Equivalent
1"
1.0000"
1/2"
0.5000"
1/4"
0.2500"
1/8"
0.1250"
1/16"
0.0625"
1/32"
0.03125"
1/64"
0.015625"

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Copyright 2009 Bruce Johnson and Craig Watson