Gauge to inches and MM conversion chart


Gauge

 Inches

MM

000

 0.410

10.4mm

00

 0.365

9.26mm

0

 0.325

8.25mm
2 0.258 6.543mm
4 0.204 5.189mm
6 0.162 4.115mm
8 0.128 3.263mm
10 0.102 2.588mm
12 0.081 2.052mm
14 0.064 1.628mm
16 0.051 1.291mm
18 0.040 1.024mm

Approximate MM to Inch conversion chart

MM             Inch
  8mm            5/16"

10mm            3/8"
12mm            1/2"
  14mm            9/16"
16mm            5/8"
   18mm          11/16"
19mm            3/4"
22mm            7/8"

 

Fabrication

Sheet Metal Gage Thickness

Standard
Gage No.		 Ferrous Thickness
(Steel)		 Non-Ferrous Thickness
(Aluminum)
(in)(mm) (in)(mm)
3 0.23916.0731 0.22945.8268
4 0.22425.6947 0.20435.1892
5 0.20925.3137 0.18194.6203
6 0.19434.9352 0.16204.1148
7 0.17934.5542 0.14433.6652
8 0.16444.1758 0.12853.2639
9 0.14953.7973 0.11442.9058
10 0.13453.4163 0.10192.5883
11 0.11963.0378 0.09072.3038
12 0.10462.6568 0.08082.0523
13 0.08972.2784 0.07201.8288
14 0.07471.8974 0.06411.6281
15 0.06731.7094 0.05711.4503
16 0.05981.5189 0.05081.2903
17 0.05381.3665 0.04531.1506
18 0.04781.2141 0.04031.0236
19 0.04181.0617 0.03590.9119
20 0.03590.9119 0.03200.8128
21 0.03290.8357 0.02850.7239
22 0.02990.7595 0.02530.6426
23 0.02690.6833 0.02260.5740
24 0.02390.6071 0.02010.5105
25 0.02090.5309 0.01790.4547
26 0.01790.4547 0.01590.4039
27 0.01640.4166 0.01420.3607
28 0.01490.3785 0.01260.3200
29 0.01350.3429 0.01130.2870
30 0.01200.3048 0.01000.2540
31 0.01050.2667 0.00890.2261
32 0.00970.2464 0.00800.2032
33 0.00900.2286 0.00710.1803
34 0.00820.2083 0.00630.1600
35 0.00750.1905 0.00560.1422
36 0.00670.1702   
37 0.00640.1626   
38 0.00600.1524   
Standard
Gage No.		 (in)(mm) (in)(mm)
Ferrous Thickness
(Steel)		 Non-Ferrous Thickness
(Aluminum)



Thickness Weight
Gauge Frac. Inch Dec. Inch mm oz/ft^2 lb/ft^2 kg/ft^2 kg/m^2 lb/m^2
0000000 1/2 .5 12.7 320 20.00 9.072 97.65 215.28
000000 15/32 .46875 11.90625 300 18.75 8.505 91.55 201.82
00000 7/16 .4375 11.1125 280 17.50 7.983 85.44 188.37
0000 13/32 .40625 10.31875 260 16.25 7.371 79.33 174.91
000 3/8 .375 9.525 240 15 6.804 73.24 161.46
00 11/32 .34375 8.73125 220 13.75 6.237 67.13 148.00
0 5/16 .3125 7.9375 200 12.50 5.67 61.03 134.55
1 9/32 .28125 7.14375 180 11.25 5.103 54.93 121.09
2 17/64 .265625 6.746875 170 10.625 4.819 51.88 114.37
3 1/4 .25 6.35 160 10 4.536 48.82 107.64
4 15/64 .234375 5.953125 150 9.375 4.252 45.77 100.91
5 7/32 .21875 5.55625 140 8.75 3.969 42.72 94.18
6 13/64 .203125 5.159375 130 8.125 3.685 39.67 87.45
7 3/16 .1875 4.7625 120 7.5 3.402 36.62 80.72
8 11/64 .171875 4.365625 110 6.875 3.118 33.57 74.00
9 5/32 .15625 3.96875 100 6.25 2.835 30.52 67.27
10 9/64 .140625 3.571875 90 5.625 2.552 27.46 60.55
11 1/8 .125 3.175 80 5 2.268 24.41 53.82
12 7/64 .109375 2.778125 70 4.375 1.984 21.36 47.09
13 3/32 .09375 2.38125 60 3.75 1.701 18.31 40.36
14 5/64 .078125 1.984375 50 3.125 1.417 15.26 33.64
15 9/128 .0703125 1.7859375 45 2.8125 1.276 13.73 30.27
16 1/16 .0625 1.5875 40 2.5 1.134 12.21 26.91
17 9/160 .05625 1.42875 36 2.25 1.021 10.99 24.22
18 1/20 .05 1.27 32 2 .9072 9.765 21.53
19 7/160 .04375 1.11125 28 1.75 .7938 8.544 18.84
20 3/80 .0375 .9525 24 1.50 .6804 7.324 16.15
21 11/320 .034375 .873125 22 1.375 .6237 6.713 14.80
22 1/32 .03125 .793750 20 1.25 .567 6.103 13.46
23 9/320 .028125 .714375 18 1.125 .5103 5.493 12.11
24 1/40 .025 .635 16 1 .4536 4.882 10.76
25 7/320 .021875 .555625 14 .875 .3969 4.272 9.42
26 3/160 .01875 .47625 12 .75 .3402 3.662 8.07
27 11/640 .0171875 .4365625 11 .6875 .3119 3.357 7.40
28 1/64 .015625 .396875 10 .625 .2835 3.052 6.73
29 9/640 .0140625 .3571875 9 .5625 .2551 2.746 6.05
30 1/80 .0125 .3175 8 .5 .2268 2.441 5.38
31 7/640 .0109375 .2778125 7 .4375 .1984 2.136 4.71
32 13/1280 .01015625 .25796875 6 1/2 .40625 .1843 1.983 4.37
33 3/320 .009375 .238125 6 .375 .1701 1.831 4.04
34 11/1280 .00859375 .21828125 5 1/2 .34375 .1559 1.678 3.70
35 5/640 .0078125 .1984375 5 .3125 .1417 1.526 3.36
36 9/1280 .00703125 .17859375 4 1/2 .28125 .1276 1.373 3.03
37 17/2560 .006640625 .168671875 4 1/4 .265625 .1205 1.297 2.87
38 1/160 .00625 .15875 4 .25 .1134 1.221 2.69