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Ring Size Charts


  US/Canada  
Standard
  UK, Irish,  
Australia
  Japan    Swiss    Inside Diameter    Inside Circumference  
  inches  mminchesmm
0 - - - 0.45811.61.43836.5
1/4 - - - 0.46611.81.46337.2
1/2A - - 0.47412.01.48837.8
3/4A-1/2 - - 0.48212.21.51338.4
1B1 - 0.49012.41.53939.1
1-1/4B-1/2 - - 0.49812.61.56439.7
1-1/2C - - 0.50612.91.58940.4
1-3/4C-1/2 - - 0.51413.11.61441.0
2D21-1/20.52213.31.63941.6
2-1/4D-1/2 - - 0.5313.51.66442.3
2-1/2E32-3/40.53813.71.68942.9
2-3/4E-1/2 - - 0.54613.91.71443.5
3F440.55414.11.7444.2
3-1/4F-1/255-1/40.56214.31.76544.8
3-1/2G - - 0.5714.51.7945.5
3-3/4G-1/266-1/20.57814.71.81546.1
4H 7 - 0.58614.91.8446.7
4-1/4H-1/2 - 7-3/40.59415.11.86547.4
4-1/2I 8 - 0.60215.31.8948.0
4-3/4J - 90.6115.51.91548.7
5J-1/29 - 0.61815.71.94149.3
5-1/4K - 100.62615.91.96649.9
5-1/2K-1/210 - 0.63416.11.99150.6
5-3/4L - 11-3/40.64216.32.01651.2
6L-1/21112-3/40.6516.52.04151.8
6-1/4M 12 - 0.65816.72.06652.5
6-1/2M-1/213140.66616.92.09153.1
6-3/4N - - 0.67417.12.11653.8
7N-1/21415-1/40.68217.32.14154.4
7-1/4O - - 0.6917.52.16755.0
7-1/2O-1/21516-1/20.69817.72.19255.7
7-3/4P - - 0.70617.92.21756.3
8P-1/21617-3/40.71418.12.24256.9
8-1/4Q - - 0.72218.32.26757.6
8-1/2Q-1/217 - 0.7318.52.29258.2
8-3/4R - 190.73818.72.31758.9
9R-1/218 - 0.74618.92.34259.5
9-1/4S - 20-1/40.75419.22.36860.1
9-1/2S-1/219 - 0.76219.42.39360.8
9-3/4T - 21-1/20.7719.62.41861.4
10T-1/220 - 0.77819.82.44362.1
10-1/4U21 - 0.78620.02.46862.7
10-1/2U-1/22222-3/40.79420.22.49363.3
10-3/4V - - 0.80220.42.51864.0
11V-1/223 - 0.8120.62.54364.6
11-1/4W - 250.81820.82.56965.2
11-1/2W-1/224 - 0.82621.02.59465.9
11-3/4X - - 0.83421.22.61966.5
12X-1/22527-1/20.84221.42.64467.2
12-1/4Y - - 0.8521.62.66967.8
12-1/2Z2628-3/40.85821.82.69468.4
12-3/4Z-1/2 - - 0.86622.02.71969.1
13 - 27 - 0.87422.22.74469.7
13-1/4Z1 - - 0.88222.42.76970.3
13-1/2Z1-1/2 - - 0.8922.62.79571.0
13-3/4Z2 - - 0.89822.82.8271.6
14Z3 - - 0.90623.02.84572.3
14-1/4 - - - 0.91423.22.8772.9
14-1/2Z4 - - 0.92223.42.89573.5
14-3/4 - - - 0.9323.62.9274.2
15Z4-1/2 - - 0.93823.82.94574.8
15-1/4Z5 - - 0.94624.02.9775.4
15-1/2Z5-1/2 - - 0.95424.22.99676.1
15-3/4Z6 - - 0.96224.43.02176.7
16Z6-1/2 - - 0.9724.63.04677.4
16-1/4 - 0.97824.83.07178.0
16-1/2 - 0.98625.03.09678.6
16-3/4 - 0.99425.23.12179.3
17 - 1.00225.53.14679.9
17-1/4 - 1.0125.73.17180.6
17-1/2 - 1.01825.93.19781.2
17-3/4 - 1.02626.13.22281.8
18 - 1.03426.33.24782.5
18-1/4 - 1.04226.53.27283.1
18-1/2 - 1.0526.73.29783.7
18-3/4 - 1.05826.93.32284.4
19 - 1.06627.13.34785.0
19-1/4 - 1.07427.33.37285.7
19-1/2 - 1.08227.53.39786.3
19-3/4 - 1.0927.73.42386.9
20 - 1.09827.93.44887.6
20-1/4 - 1.10628.13.47388.2
20-1/2 - 1.11428.33.49888.8
20-3/4 - 1.12228.53.52389.5
21 - 1.1328.73.54890.1
21-1/4 - 1.13828.93.57390.8
21-1/2 - 1.14629.13.59891.4
21-3/4 - 1.15429.33.62492.0
22 - 1.16229.53.64992.7
22-1/4 - 1.1729.73.67493.3
22-1/2 - 1.17829.93.69994.0
22-3/4 - 1.18630.13.72494.6
23 - 1.19430.33.74995.2
23-1/4 - 1.20230.53.77495.9
23-1/2 - 1.2130.73.79996.5
23-3/4 - 1.21830.93.82597.1
24 - 1.22631.13.8597.8
24-1/4 - 1.23431.33.87598.4
24-1/2 - 1.24231.53.999.1
24-3/4 - 1.2531.83.92599.7
25 - 1.25832.03.95100.3
25-1/4 - 1.26632.23.975101.0
25-1/2 - 1.27432.44.0101.6
25-3/4 - 1.28232.64.025102.2
26 - 1.2932.84.051102.9
26-1/41.29833.04.076103.5




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