RING SIZE CONVERSION

Place a ring on a roller and measure the inner diameter. Then follow the chart to find your ring size based on your location.  

US, CANADAUK, AUSTRALIA, IRELAND, NEW ZEALANDJAPAN, INDIA, CHINA, SOUTH AFRICaSPAIN, ITALY, NETHERLANDS, SWITZERLANDINSIDE DIAMETER (MM)
4H76.7514.88 & 46.8
4.25H.57.515.09 & 47.4
4.5I8815.29 & 48
4.75J8.7515.49 & 48.7
5J 1/299.2515.7 & 49.3
5.25K1015.9 & 50
5.5K 1/21010.516.1 & 50.6
5.75L11.2516.31 & 51.2
6L 1/21111.7516.51 & 51.9
6.25M1212.516.71 & 52.5
6.5M 1/21313.2516.92 & 53.1
6.75N13.7517.12 & 53.8
7N 1/21414.517.32 & 54.4
7.25O1517.53 & 55.1
7.5O 1/21515.7517.73 & 55.7
7.75P16.2517.93 & 56.3
8P 1/2161718.14 & 57
8.25Q17.518.34 & 57.6
8.5Q 1/21718.2518.54 & 58.3
8.75R1918.75 & 58.9
9R 1/21819.518.95 & 59.5
9.25S20.2519.15 & 60.2
9.5S 1/21920.7519.35 & 60.8
9.75T21.519.56 & 61.4
10T 1/2202219.76 & 62.1
10.25U2122.7519.96 & 62.7
10.5U 1/22223.2520.17 & 63.4
10.75V2420.37 & 64
11V 1/22324.7520.57 & 64.6
11.25W25.2520.78 & 65.3
11.5W 1/2242620.98 & 65.9
11.75X26.521.18 & 66.6
12X 1/22527.2521.39 & 67.2
12.25Y27.7521.59 & 67.8
12.5Z2628.521.79 & 68.5
12.75Z 1/22922 & 69.1
132729.7522.2 & 69.7
13.25Z130.522.4 & 70.4
13.53122.61 & 71
13.75Z231.7522.81 & 71.7
14Z332.2523.01 & 72.3
14.253323.22 & 72.9
14.5Z433.523.42 & 73.6
14.7534.2523.62 & 74.2
1534.7524.23 & 76.1
15.2535.524.03 & 75.5
15.536.2524.23 & 76.1
15.7536.7524.43 & 76.8
1637.524.64 & 77.4