These tables below can be easily used to convert between fractional, decimal inches, cms and metric millimeters
When buying, designing and manufacturing jewellery in Australia we use "mm's" and "cms" to measure our jewellery
We have included these easy to use conversion charts for quick size conversion
We hope you find these easy to use and helpfulin accurately assessing the real life size of our jewellery from mm's, cm's and inches
INCHES CM
0.5 = 1.25
1 = 2.5
1.5 = 3.75
2 = 5
2.5 = 6.25
3 = 7.5
3.5 = 8.75
4 = 10
4.5 = 9.5
5 = 10
5.5 = 13.75
6 = 15
6.5 = 16.25
7 = 17.5
8.5 = 21.25
9 = 22.5
9.5 = 23.75
10 = 25
10.5 = 26.25
11 = 27.5
11.5 = 28.75
12 = 30
12.5 = 31.25
13 = 32.5
13.5 = 33.75
14 = 35
14.5 = 36.25
15 = 37.5
15.5 = 38.75
16 = 40
16.5 = 41.25
17 = 42.5
17.5 = 43.75
18 = 45
18.5 = 46.25
19 = 47.5
19.5 = 48.75
20 = 50
20.5 = 51.25
21 = 52.5
21.5 = 53.75
22 = 55
22.5 = 56.25
23 = 57.5
23.5 = 58.75
24 = 60
24.5 = 61.25
25 = 62.5
25.5 = 63.75
26 = 65
26.5 = 66.25
27 = 67.5
27.5 = 68.75
28 = 70
28.5 = 71.25
29 = 72.5
29.5 = 73.75
30 = 75
30.5 = 76.25
31 = 77.5
31.5 = 78.75
32 = 80
Fractional Decimal mm
. = 0.0394 = 1.0000
. = 0.0433 = 1.1000
3/64= 0.0469 = 1.1906
. = 0.0472 = 1.2000
. = 0.0512 = 1.3000
. = 0.0551 = 1.4000
. = 0.0591 = 1.5000
1/16= 0.0625 = 1.5875
. = 0.0630 = 1.6000
. = 0.0669 = 1.7000
. = 0.0709 = 1.8000
. = 0.0748 = 1.9000
5/64= 0.0781 = 1.9844
. = 0.0787 = 2.0000
. = 0.0827 = 2.1000
. = 0.0866 = 2.2000
. = 0.0906 = 2.3000
3/32= 0.0938 = 2.3813
. = 0.0945 = 2.4000
. = 0.0984 = 2.5000
7/64= 0.1094 = 2.7781
. = 0.1181 = 3.0000
1/8= 0.1250 = 3.1750
. = 0.1378 = 3.5000
9/64= 0.1406 = 3.5719
5/32= 0.1563 = 3.9688
. = 0.1575 = 4.0000
11/64= 0.1719 = 4.3656
. = 0.1772 = 4.5000
3/16= 0.1875 = 4.7625
. = 0.1969 = 5.0000
13/64= 0.2031 = 5.1594
. = 0.2165 = 5.5000
7/32= 0.2188 = 5.5563
15/64= 0.2344 = 5.9531
. = 0.2362 = 6.0000
1/4= 0.2500 = 6.3500
. = 0.2559 = 6.5000
17/64= 0.2656 = 6.7469
. = 0.2756 = 7.0000
9/32= 0.2813 = 7.1438
. = 0.2953 = 7.5000
19/64= 0.2969 = 7.5406
5/16 =0.3125 = 7.9375
. = 0.3150 = 8.0000
21/64= 0.3281 = 8.3344
. = 0.3346 = 8.5000
11/32= 0.3438 = 8.7313
. = 0.3543 = 9.0000
23/64= 0.3594 = 9.1281
. = 0.3740 = 9.5000
3/8= 0.3750 = 9.5250
25/64= 0.3906 = 9.9219
. = 0.3937 = 10.0000
13/32= 0.4063 = 10.3188
. = 0.4134 = 10.5000
27/64= 0.4219 = 10.7156
. = 0.4331 = 11.0000
7/16= 0.4375 = 11.1125
. = 0.4528 = 11.5000
29/64= 0.4531 = 11.5094
15/32= 0.4688 = 11.9063
. = 0.4724 = 12.0000
31/64= 0.4844 = 12.3031
. = 0.4921 = 12.5000
1/2= 0.5000 = 12.7000
. = 0.5118 = 13.0000
33/64= 0.5156 = 13.0969
17/32= 0.5313 = 13.4938
. = 0.5315 = 13.5000
35/64= 0.5469 = 13.8906
. = 0.5512 = 14.0000
9/16= 0.5625 = 14.2875
. = 0.5709 = 14.5000
37/64= 0.5781 = 14.6844
. = 0.5906 = 15.0000
19/32= 0.5938 = 15.0813
39/64= 0.6094 = 15.4781
. = 0.6102 = 15.5000
5/8 = 0.6250 = 15.8750
. = 0.6299 = 16.0000
41/64= 0.6406 = 16.2719
. = 0.6496 = 16.5000
21/32= 0.6563 = 16.6688
. = 0.6693 = 17.0000
43/64= 0.6719 = 17.0656
11/16= 0.6875 = 17.4625
. = 0.6890 = 17.5000
45/64= 0.7031 = 17.8594
. = 0.7087 = 18.0000
23/32= 0.7188 = 18.2563
. = 0.7283 = 18.5000
47/64= 0.7344 = 18.6531
. = 0.7480 = 19.0000
3/4 = 0.7500 = 19.0500
49/64= 0.7656 = 19.4469
. = 0.7677 = 19.5000
25/32= 0.7813 = 19.8438
. = 0.7874 = 20.0000
51/64 0.7969 = 20.2406
. = 0.8071 = 20.5000
13/16 0.8125 = 20.6375
. = 0.8268 = 21.0000
53/64 0.8281 = 21.0344
27/32 0.8438 = 21.4313
. = 0.8465 = 21.5000
55/64 0.8594 = 21.8281
. = 0.8661 = 22.0000
7/8 = 0.8750 = 22.2250
. = .8858 = 22.5000
57/64= .89063 = 22.6219
. = .9055 = 23.0000
29/32 .90625 = 23.0188
59/64= .92188 = 23.4156
. = .9252 = 23.5000
15/16 .93750 = 23.8125
. = .9449 = 24.0000
61/64= .95313 = 24.2094
. = .9646 = 24.5000
31/32 .96875 = 24.6063
. = .9843 = 25.0000
63/64 = .98438 = 25.0031
1 = 1.000 = 25.40
. = 1.0039 = 25.5000
. = 1.0236 = 26.0000
. = 1.0433 = 26.5000
. = 1.0630 = 27.0000
. = 1.0827 = 27.5000
. = 1.1024 = 28.0000
. = 1.1220 = 28.5000
. = 1.1417 = 29.0000
. = 1.1614 = 29.5000
. = 1.1811 = 30.0000
. = 1.2205 = 31.0000
1 1/4 = 1.2500 = 31.7500
. = 1.2598 = 32.0000
. = 1.2992 = 33.0000
. = 1.3386 = 34.0000
. = 1.3780 = 35.0000
. = 1.4173 = 36.0000
. = 1.4567 = 37.0000
. = 1.4961 = 38.0000
1 1/2= 1.5000 = 38.1000
. = 1.5354 = 39.0000
. = 1.5748 = 40.0000
. = 1.6142 = 41.0000
. = 1.6535 = 42.0000
. = 1.6929 = 43.0000
. = 1.7323 = 44.0000
1 3/4 = 1.7500 = 44.4500
. = 1.7717 = 45.0000
. = 1.8110 = 46.0000
. = 1.8504 = 47.0000
. = 1.8898 = 48.0000
. = 1.9291 = 49.0000
. = 1.9685 = 50.0000
2 = 2.0000 = 50.8000
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