The Jump Ring Lady's Conversion Charts for Jump Rings and Chain Mail

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Jump Ring Conversion Charts for Inches to Millimeters, Millimeters to Inches, Wire Gauges to Inches and Millimeters,
Aspect Ratios for Jump Rings, Inside Diameter of Jump Rings, Outside Diameter of Jump Rings

Wire Gauges Jump Ring Lady's
18 Gauge Inside & Outside Diameters
Jump Ring Lady's
20 Gauge Inside & Outside Diameters
Inches to Millimeters  Conversions
 
American
Wire Gauge
Standard
Wire Gauge
Inches Millimeters
10 12 .102 2.59
12 14 .081 2.06
14 16 .064 1.63
16 18 .052 1.32
17 18 .045 1.14
18 19 .040 1.02
20 20 .032 0.81

The Complete List
American Wire
Gauge
Inches Millimeters
1 .289 7.348
2 .258 6.543
3 .229 5.827
4 .204 5.189
5 .182 4.621
6 .162 4.115
7 .144 3.664
8 .128 3.263
9 .114 2.906
10 .102 2.588
11 .091 2.304
12 .081 2.052
13 .072 1.828
14 .064 1.628
15 .057 1.449
16 .051 1.291
17 .045 1.149
18 .040 1.024
19 .036 .912
20 .032 .812
21 .028 .723
22 .025 .644
23 .023 .573
24 .020 .511
25 .018 .455
26 .016 .405
27 .014 .36
28 .013 .321
29 .011 .286
30 .010 .255
31 .0089 .229
32 .008 .2
33 .0071 .18
34 .0063 .16
35 .0056 .142
36 .005 .13
37 .0045 .114
38 .004 .10
 
Outside Diameter Inside Diameter Aspect Ratio
5mm 2.8mm 2.75
6mm 3.8mm 3.73
7mm 4.9mm 4.8
8mm 5.9mm 5.78
9mm 6.9mm 6.76
10mm 7.9mm 7.75
 
Aspect Ratio, AR, is the inside diameter of the wire divided by the wire's thickness. 
AR = ID/wire thickness
 
Outside Diameter Inside Diameter Aspect Ratio
4mm 2.3mm 2.84
5mm 3.3mm 4.07
6mm 4.3mm 5.31
7mm 5.3mm 6.54
8mm 6.3mm 7.78


 

 
 Inches  Inches Decimal
Inch
Millimeter
Conversion
 
1/64   0.016 0.4
2/64 1/32 0.031 0.8
3/64 0.047 1.2
4/64 1/16 0.063 1.6
5/64 0.078 2.0
6/64 3/32 0.094 2.4
7/64 0.109 2.8
8/64 1/8 0.125 3.2
9/64 0.141 3.6
10/64 5/32 0.156 4.0
11/64 0.172 4.4
12/64 3/16 0.188 4.8
13/64 0.203 5.2
14/64 7/32 0.219 5.6
15/64 0.234 6.0
16/64 1/4 0.250 6.4
17/64 0.266 6.7
18/64 9/32 0.281 7.1
19/64 0.297 7.5
20/64 5/16 0.313 7.9
21/64 0.328 8.3
22/64 11/32 0.344 8.7
23/64 0.359 9.1
24/64 3/8 0.375 9.5
25/64   .3906 10
 

 

                                     
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Conversion Charts
Millimeters to Inches and Inches to Millimeters

Millimeters to Inches

Millimeters to Inches

Inches to Millimeters

Fractions to Decimals

mm inch
1 0.03937
2 0.07874
3 0.11811
4 0.15748
5 0.19685
6 0.23622
7 0.27559
8 0.31496
9 0.35433
10 0.3937
11 0.43307
12 0.47244
13 0.51181
14 0.55118
15 0.59055
16 0.62992
17 0.66929
18 0.70866
19 0.74803
20 0.7874
21 0.82677
22 0.86614
23 0.90551
24 0.94488
25 0.98425
26 1.02362
27 1.06299
28 1.10236
29 1.14173
30 1.1811
31 1.22047
32 1.25984
33 1.29921
34 1.33858
35 1.37795
36 1.41732
37 1.45669
38 1.49606
39 1.53543
40 1.5748
41 1.61417
42 1.65354
43 1.69291
44 1.73228
45 1.77165
46 1.81102
47 1.85039
48 1.88976
49 1.92913
50 1.9685
 
mm inch
51 2.00787
52 2.04724
53 2.08661
54 2.12598
55 2.16535
56 2.20472
57 2.24409
58 2.28346
59 2.32283
60 2.3622
61 2.40157
62 2.44094
63 2.48032
64 2.51969
65 2.55906
66 2.59843
67 2.6378
68 2.67717
69 2.71654
70 2.75591
71 2.79528
72 2.83465
73 2.87402
74 2.91339
75 2.95276
76 2.99213
77 3.0315
78 3.07087
79 3.11024
80 3.14961
81 3.18898
82 3.22835
83 3.26772
84 3.30709
85 3.34646
86 3.38583
87 3.4252
88 3.46457
89 3.50394
90 3.54331
91 3.58268
92 3.62205
93 3.66142
94 3.70079
95 3.74016
96 3.77953
97 3.8189
98 3.85827
99 3.89764
100 3.93701
 
inch mm
1/64 0.396875
1/32 0.79375
3/64 1.190625
1/16 1.5875
5/64 1.984375
3/32 2.38125
7/64 2.778125
1/8 3.175
9/64 3.571875
5/32 3.96875
11/64 4.365625
3/16 4.7625
13/64 5.159375
7/32 5.55625
15/64 5.953125
1/4 6.35
17/64 6.746875
9/32 7.14375
19/64 7.540625
5/16 7.9375
21/64 8.334375
11/32 8.73125
23/64 9.128125
3/8 9.525
25/64 9.921875
13/32 10.31875
27/64 10.715625
7/16 11.1125
29/64 11.509375
15/32 11.90625
31/64 12.303125
1/2 12.7
33/64 13.096875
17/32 13.49375
35/64 13.890625
9/16 14.2875
37/64 14.684375
19/32 15.08125
39/64 15.478125
5/8 15.875
41/64 16.271875
21/32 16.66875
43/64 17.065625
11/16 17.4625
45/64 17.859375
23/32 18.25625
47/64 18.653125
3/4 19.05
49/64 19.446875
25/32 19.84375
51/64 20.240625
13/16 20.6375
53/64 21.034375
27/32 21.43125
55/64 21.828125
7/8 22.225
57/64 22.621875
29/32 23.01875
59/64 23.415625
15/16 23.8125
61/64 24.209375
31/32 24.60625
63/64 25.003125
1 25.4
fraction decimal
1/64 0.0156
1/32 0.0313
3/64 0.0469
1/16 0.0625
5/64 0.0781
3/32 0.0938
7/64 0.1094
1/8 0.125
9/64 0.1406
5/32 0.1563
11/64 0.1719
3/16 0.1875
13/64 0.2031
7/32 0.2188
15/64 0.2344
1/4 0.25
17/64 0.2656
9/32 0.2813
19/64 0.2969
5/16 0.3125
21/64 0.3281
11/32 0.3438
23/64 0.3594
3/8 0.375
25/64 0.3906
13/32 0.4063
27/64 0.4219
7/16 0.4375
29/64 0.4531
15/32 0.4688
31/64 0.4844
1/2 0.5
33/64 0.5156
17/32 0.5313
35/64 0.5469
9/16 0.5625
37/64 0.5781
19/32 0.5938
39/64 0.6094
5/8 0.625
41/64 0.6406
21/32 0.6563
43/64 0.6719
11/16 0.6875
45/64 0.7031
23/32 0.7188
47/64 0.7344
3/4 0.75
49/64 0.7656
25/32 0.7813
51/64 0.7969
13/16 0.8125
53/64 0.8281
27/32 0.8438
55/64 0.8594
7/8 0.875
57/64 0.8906
29/32 0.9063
59/64 0.9219
15/16 0.9375
61/64 0.9531
31/32 0.9688
63/64 0.9844
1 1
Beading Wire:
Soft Flex, Acculon & Elastic

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