Find your ring size with our International Conversion Chart

Ring Dia ⌀ (Inside) Ring Circumference (Inside) ‹ International Standard Sizes ›
MM Inches MM Inches UK / AU USA / CA Europe
14.5 0.565 45.5 1.77 G 3 3/8 46
14.7 0.573 46.2 1.80 G 1/2 3 5/8 46
14.9 0.576 46.8 1.81 H 3 3/4 47
15.1 0.585 47.4 1.84 H 1/2 4 47
15.3 0.592 48.0 1.86 I 4 1/4 48
15.4 0.601 48.4 1.89 I 1/2 4 1/2 48
15.5 0.606 48.7 1.90 J 4 5/8 49
15.7 0.618 49.4 1.94 J 1/2 5 49
15.9 0.622 50.0 1.95 K 5 1/8 50
16.1 0.630 50.6 1.98 K 1/2 5 3/8 51
16.3 0.634 51.2 1.99 L 5 1/2 51
16.5 0.646 51.9 2.03 L 1/2 5 7/8 52
16.7 0.650 52.5 2.04 M 6 53
16.9 0.658 53.2 2.07 M 1/2 6 1/4 53
17.1 0.666 53.8 2.09 N 6 1/2 54
17.3 0.674 54.5 2.12 N 1/2 6 3/4 55
17.5 0.683 55.1 2.15 O 7 55
17.7 0.687 55.7 2.16 O 1/2 7 1/4 56
17.9 0.698 56.3 2.20 P 7 1/2 56
18.1 0.707 57.0 2.22 P 1/2 7 3/4 57
18.3 0.716 57.6 2.25 Q 8 58
18.5 0.722 58.3 2.27 Q 1/2 8 1/4 58
18.7 0.733 58.9 2.30 R 8 5/8 59
19.0 0.740 59.6 2.32 R 1/2 8 7/8 60