









Ring Sizing Guide
Japanese Scale |
Inner Circumference (mm) |
Inner Circumference (in) |
Diameter (mm) |
Diameter (in) |
11 |
51.31mm | 2.02in | 16.33mm | 0.64in |
11.5 |
51.84mm | 2.04in | 16.5mm | 0.65in |
12 |
52.36mm | 2.06in | 16.67mm | 0.66in |
12.5 |
52.88mm | 2.08in | 16.83mm | 0.66in |
13 |
53.41mm | 2.1in | 17mm | 0.67in |
13.5 |
53.93mm | 2.12in | 17.17mm | 0.68in |
14 |
54.45mm | 2.14in | 17.33mm | 0.68in |
14.5 |
54.98mm | 2.16in | 17.5mm | 0.69in |
15 |
55.5mm | 2.19in | 17.67mm | 0.7in |
15.5 |
56.03mm | 2.21in | 17.83mm | 0.7in |
16 |
56.55mm | 2.23in | 18mm | 0.71in |
16.5 |
57.07mm | 2.25in | 18.17mm | 0.72in |
17 |
57.6mm | 2.27in | 18.33mm | 0.72in |
17.5 |
58.12mm | 2.29in | 18.5mm | 0.73in |
18 |
58.64mm | 2.31in | 18.67mm | 0.73mm |
18.5 |
59.17mm | 2.33in | 18.83mm | 0.74in |
19 |
59.69mm | 2.35in | 19mm | 0.75in |
19.5 |
60.21mm | 2.37in | 19.17mm | 0.75in |
20 |
60.74mm | 2.39in | 19.33mm | 0.76in |
20.5 |
61.26mm | 2.41in | 19.5mm | 0.77in |
21 |
61.78mm | 2.43in | 19.67mm | 0.77in |
21.5 |
62.31mm | 2.45in | 19.83mm | 0.78in |
22 |
62.83mm | 2.47in | 20mm | 0.79in |
22.5 |
63.36mm | 2.49in | 20.17mm | 0.79in |
23 |
63.88mm | 2.51in | 20.33mm | 0.8in |
23.5 |
64.4mm | 2.54in | 20.5m | 0.81in |
24 |
64.93mm | 2.56in | 20.67mm | 0.81in |
24.5 |
65.45in | 2.58in | 20.83mm | 0.82in |
25 |
65.97mm | 2.6in | 21mm | 0.83in |
25.5 |
66.5mm | 2.62in | 21.17mm | 0.83in |
26 |
67.02mm | 2.64in | 21.33mm | 0.84in |
26.5 |
67.54mm | 2.66in | 21.6mm | 0.85in |
27 |
68.07mm | 2.68in | 21.67mm | 0.85in |
27.5 |
68.59mm | 2.7in | 21.83mm | 0.86in |
28 |
69.11mm | 2.72in | 22mm | 0.85in |