How to select the correct ring size
Ring Size Chart |
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Internal Diameter | Sizes | ||
MM | Inches | British & Australian | USA & Canada |
14.36 | 0.565 | G | 3 3/8 |
14.56 | 0.573 | G 1/2 | 3 5/8 |
14.65 | 0.577 | H | 3 3/4 |
14.86 | 0.585 | H 1/2 | 4 |
15.04 | 0.592 | I | 4 1/4 |
15.27 | 0.601 | I 1/2 | 4 1/2 |
15.40 | 0.606 | J | 4 5/8 |
15.70 | 0.618 | J 1/2 | 5 |
15.80 | 0.622 | K | 5 1/8 |
16.00 | 0.630 | K 1/2 | 5 3/8 |
16.10 | 0.634 | L | 5 1/2 |
16.41 | 0.646 | L 1/2 | 5 7/8 |
16.51 | 0.650 | M | 6 |
16.71 | 0.658 | M 1/2 | 6 1/4 |
16.92 | 0.666 | N | 6 1/2 |
17.13 | 0.674 | N 1/2 | 6 3/4 |
17.35 | 0.683 | O | 7 |
17.45 | 0.687 | O 1/2 | 7 1/4 |
17.75 | 0.699 | P | 7 1/2 |
17.97 | 0.707 | P 1/2 | 7 3/4 |
18.19 | 0.716 | Q | 8 |
18.35 | 0.722 | Q 1/2 | 8 1/4 |
18.61 | 0.733 | R | 8 5/8 |
18.80 | 0.740 | R 1/2 | 8 7/8 |
19.10 | 0.752 | S | 9 1/8 |
19.31 | 0.760 | S 1/2 | 9 3/8 |
19.51 | 0.768 | T | 9 5/8 |
19.84 | 0.781 | T 1/2 | 10 |
20.02 | 0.788 | U | 10 1/4 |
20.20 | 0.797 | U 1/2 | 10 1/2 |
20.32 | 0.800 | V | 10 5/8 |
20.68 | 0.814 | V 1/2 | 11 |