RING SIZING CHART

Inside diameterInside circumferenceSizes
(in)(mm)(in)(mm)United States, Canada and MexicoUnited Kingdom, Ireland, Australia, South Africa and New ZealandItaly, Spain, Switzerland
0.5714.481.7945.53 1/2G5.5
0.57814.681.8246.13 3/4G 1/26
0.58615.091.8446.84H6.75
0.59415.091.8747.44 1/4H 1/27.5
0.60215.291.89484 1/2I8
0.6115.491.9248.74 3/4J8.75
0.61815.71.9449.35J 1/29.25
0.62615.91.97505 1/4K10
0.63416.11.9950.65 1/2K 1/210.5
0.64216.312.0248.75 3/4L11.25
0.6516.512.0451.96L 1/211.75
0.63416.11.9950.65 1/2K 1/210.5
065816.712.0752.56 1/4M12.5
0.66616.922.0953.16 1/2M 1/213.25
0.67417.122.1253.86 3/4N13.75
0.68217.322.1454.47N 1/214.5
0.6917.532.1755.17 1/4O15
0.69817.732.1955.77 1/2O 1/215.75
0.70617.932.2256.37 3/4P16.25
0.71418.142.24578P 1/217
0.72218.342.2757.68 1/4Q17.25
0.7318.542.2958.38 1/2Q 1/218.25
0.73818.752.3258.98 3/4R19
0.74618.952.3459.59R 1/219.5
0.75419.152.3760.29 1/4S20.25
0.76219.352.3960.89 1/2S 1/220.75
0.7719.562.4261.49 3/4T21.5
0.77819.762.4462.110T 1/222
0.78619.962.4762.710 1/4U22.75
0.79420.172.4963.410 1/2U 1/223.35
0.80220.372.526410 3/4V24
0.8120.572.5464.611V 1/224.75
0.81820.782.5765.311 1/4W25.25
0.82620.982.5965.911 1/2W 1/226
0.83421.182.6266.611 3/4X26.5
0.84221.392.6567.212X 1/227.75
0.8521.592.6767.812 1/4Y27.75
0.85821.792.768.512 1/2Z28.5