CONVERSION TABLE

Inches/mm & mm/Inches

Fraction Inches Millimeters
1/8 0.125 3.175
0.137795 3.5
5/32 0.15625 3.9688
0.15748 4.0
11/64 0.171875 4.3655
0.177165 4.5
3/16 0.1875 4.7625
0.19685 5.0
7/32 0.21875 5.5562
15/64 0.234375 5.9531
0.23622 6.0
1/4 0.25 6.35
0.255906 6.5
17/64 0.265625 6.7469
0.275591 7.0
9/32 0.28125 7.1438
0.295276 7.5
19/64 0.296825 7.5406
5/16 0.3125 7.9375
0.314961 8.0
21/64 0.328125 8.3344
0.334646 8.5
11/32 0.34375 8.7312
0.354331 9.0
23/64 0.359375 9.1281
0.374016 9.5
3/8 0.375 9.525
25/64 0.390625 9.9219
0.393701 10.0
13/32 0.40625 10.3188
0.413386 10.5
27/64 0.421875 10.7156
0.433671 11.0
7/16 0.4375 11.1125
0.452756 11.50
29/64 0.453125 11.5094
15/32 0.46875 11.9062
0.472441 12.0
31/64 0.484375 12.3031
0.492126 12.5
1/2 0.5 12.7
0.51181 13.0
33/64 0.515625 13.0969
17/32 0.53125 13.4938
0.53150 13.5
35/64 0.546875 13.8906
0.55118 14.0
9/16 0.5625 14.2875
0.57087 14.5
37/64 0.578126 14.6844
0.59055 15.0
19/32 0.59375 15.0812
39/64 0.609375 15.4781
0.61024 15.5
5/8 0.625 15.875
0.62992 16.0
41/64 0.640625 16.2719
0.64661 16.5
21/32 0.65625 16.6668
0.66929 17.0
43/64 0.671875 17.0656
11/16 0.6875 17.4625
0.68898 17.5
45/64 0.703125 17.6594
0.70866 18.0
23/32 0.71875 18.2562
0.72835 18.5
47/64 0.734375 18.6531
0.74803 19.0
3/4 0.75 19.05
49/64 0.765625 19.4469
0.76772 19.5
25/32 0.78125 19.8438
0.7874 20.0
51/64 0.796875 20.2406
0.80709 20.5
13/16 0.8125 20.6375
0.82677 21.0
53/64 0.828125 21.0344
27/32 0.84375 21.4312
0.84646 21.5
55/64 0.859375 21.8281
0.86614 22.0
7/8 0.875 22.225
0.88583 22.5
57/64 0.890625 22.6219
0.90551 23.0
29/32 0.90625 23.0188
59/62 0.921875 23.4156
0.92520 23.5
15/16 0.9375 23.8125
0.94488 24.0
61/64 0.953125 24.2094
31/32 0.96875 24.6062
0.97825 25.0
63/64 0.984375 25.0031
1.000 1.000 25.4
1.00394 25.5
1.02362 26.0
1.1/16 1.0625 26.988
1.06299 27.0
1.10236 28.0
1.1/8 1.125 28.575
1.14173 29.0
1.18110 30.0
13/16 1.1875 30.162
1.22047 31.0
1.1/4 1.250 31.75
1.25984 32.0
1.29921 33.0
1 5/16 1.3125 33.338
1.33858 34.0
1 3/8 1.375 34.925
1.37795 35.0
1.41732 36.0
1.7/16 1.4375 36.312
1.45669 37.0
1.49606 38.0
1.1/2 1.500 38.100
1.53543 39.0
1.9/16 1.5625 39.688
1.57480 40.0
1.61417 41.0
1.5/8 1.625 41.275
1.65354 42.0
1.11/16 1.6875 42.862
1.69291 43.0
1.73228 44.0
1.3/4 1.750 44.450
1.77165 45.0
1.81102 46.0
1.13/16 1.8125 46.038
1.85039 47.0
1.7/8 1.875 47.625
1.88976 48.0
1.92913 49.0
1.15/16 1.9375 49.212
1.96850 50.0
2.000 50.800

WIRE GAUGE DIMENSIONS OF SIZES IN DECIMAL PARTS OF AN INCH & OF A MM

Number of Gauge Imperial Standard Wire Gauge (ISWG)
Inches mm
0 0.324 8.229
1 0.300 7.620
2 0.276 7.010
3 0.252 6.400
4 0.232 5.892
5 0.212 5.384
6 0.192 4.876
7 0.176 4.470
8 0.160 4.064
9 0.144 3.657
10 0.128 3.251
11 0.116 2.946
12 0.104 2.641
13 0.092 2.336
14 0.080 2.032
15 0.072 1.829
16 0.064 1.626
17 0.056 1.422
18 0.048 1.219
19 0.040 1.016
20 0.036 0.914
21 0.032 0.812
22 0.028 0.711
23 0.024 0.609
24 0.022 0.558
25 0.020 0.508
26 0.018 0.457
27 0.0164 0.416
28 0.0148 0.375
29 0.0136 0.345
30 0.0124 0.314
31 0.0116 0.294
32 0.0108 0.274
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