International Ring Size Chart
Circumference (mm) | Diameter (mm) | United States & Canada (mm) | UK, Europe & Australia (mm) |
Switzerland (mm) |
44.2 | 14.1 | 3 | F | 4 |
44.8 | 14.3 | F 1/2 | 5.25 | |
45.5 | 14.5 | 3.5 | G | |
46.1 | 14.7 | G 1/2 | 6.5 | |
46.8 | 14.9 | 4 | H | |
47.4 | 15.1 | H 1/2 | 7.75 | |
48 | 15.3 | 4.5 | I | |
48.7 | 15.5 | J | 9 | |
49.3 | 15.7 | 5 | J 1/2 | |
50 | 15.9 | K | 10 | |
50.6 | 16.1 | 5.5 | K 1/2 | |
51.2 | 16.3 | L | 11.75 | |
51.9 | 16.5 | 6 | L 1/2 | 12.75 |
52.5 | 16.7 | M | ||
53.1 | 16.9 | 6.5 | M 1/2 | 14 |
53.8 | 17.1 | N | ||
54.4 | 17.3 | 7 | N 1/2 | 15.25 |
55.1 | 17.5 | O | ||
55.7 | 17.7 | 7.5 | O 1/2 | 16.5 |
56.3 | 17.9 | P | ||
57 | 18.1 | 8 | P 1/2 | 17.75 |
57.2 | 18.2 | |||
57.6 | 18.3 | Q | ||
58.3 | 18.5 | 8.5 | Q 1/2 | |
58.9 | 18.8 | R | 19 | |
59.5 | 19 | 9 | R 1/2 | |
60.2 | 19.2 | S | 20.25 | |
60.8 | 19.4 | 9.5 | S 1/2 | |
61.4 | 19.6 | T | 21.5 | |
62.1 | 19.8 | 10 | T 1/2 | |
62.7 | 20 | U | ||
63.4 | 20.2 | 10.5 | U 1/2 | 22.75 |
64 | 20.4 | V | ||
64.6 | 20.6 | 11 | V 1/2 | |
65.3 | 20.8 | W | 25 | |
65.9 | 21 | 11.5 | W 1/2 | |
66.6 | 21.2 | X | ||
67.2 | 21.4 | 12 | X 1/2 | 27.5 |
67.8 | 21.6 | Y | ||
68.5 | 21.8 | 12.5 | Z | 28.75 |
69.1 | 22 | Z 1/2 | ||
69.7 | 22.2 | 13 | ||
70.4 | 22.4 | Z + 1 | ||
71 | 22.6 | 13.5 |