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    Size Charts & Guides

    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
    9.9 0.390 31.1 1.22 · 0000 ·
    10.7 0.442 33.7 1.39 · 00 ·
    11.5 0.454 36.2 1.43 · 0 ·
    12.0 0.470 37.5 1.50 A 1/2 ·
    12.2 0.479 38.3 1.51 A 1/2 3/4 ·
    12.4 0.487 38.9 1.53 B 1 ·
    12.6 0.506 39.6 1.56 B 1/2 1 1/4 ·
    12.8 0.503 40.2 1.58 C 1 1/2 ·
    13.0 0.511 40.8 1.61 C 1/2 1 3/4 ·
    13.2 0.520 41.5 1.63 D 2 41 1/2
    13.4 0.528 42.1 1.66 D 1/2 2 1/4 ·
    13.6 0.536 42.8 1.68 E 2 1/2 42 3/4
    13.8 0.544 43.5 1.71 E 1/2 2 3/4 ·
    14.0 0.553 44.1 1.74 F 3 44
    14.2 0.557 44.5 1.75 F 1/2 3 1/8 ·
    14.3 0.561 44.8 1.76 F 3/4 3 1/4 ·
    14.4 0.565 45.1 1.77 G 3 3/8 45 1/4
    14.5 0.568 45.4 1.79 G 1/4 3 1/2 ·
    14.6 0.573 45.7 1.80 G 1/2 3 5/8 ·
    14.7 0.576 46.0 1.81 H 3 3/4 46 1/2
    14.9 0.585 46.7 1.84 H 1/2 4 ·
    15.0 0.592 47.3 1.86 I 4 1/4 47 3/4
    15.3 0.601 48.0 1.89 I 1/2 4 1/2 ·
    15.4 0.606 48.4 1.90 J 4 5/8 50
    15.5 0.611 48.8 1.92 J 1/4 4 3/4 ·
    15.7 0.618 50.3 1.94 J 1/2 5 ·
    15.8 0.622 50.6 1.95 K 5 1/8 50
    15.9 0.625 50.0 1.97 K 1/4 5 1/4 ·
    16.0 0.630 50.3 1.98 K 1/2 5 3/8 ·
    16.1 0.634 50.6 1.99 L 5 1/2 51 3/4
    16.3 0.642 51.2 2.02 L 1/4 5 3/4 ·
    16.4 0.646 51.6 2.03 L 1/2 5 7/8 ·
    16.5 0.650 51.9 2.04 M 6 52 3/4
    16.7 0.658 52.5 2.07 M 1/2 6 1/4 ·
    16.9 0.666 53.2 2.09 N 6 1/2 54
    17.1 0.674 53.8 2.12 N 1/2 6 3/4 ·
    17.4 0.683 54.5 2.15 O 7 55 1/4
    17.5 0.687 54.8 2.16 O 1/2 7 1/4 ·
    17.8 0.698 55.8 2.20 P 7 1/2 56 1/2
    18.0 0.707 56.5 2.22 P 1/2 7 3/4 ·
    18.2 0.716 57.1 2.25 Q 8 57 3/4
    18.4 0.722 57.7 2.27 Q 1/2 8 1/4 ·
    18.5 0.729 58.2 2.29 Q 3/4 8 1/2 ·
    18.6 0.733 58.5 2.30 R 8 5/8 59
    18.7 0.736 58.7 2.31 R 1/4 8 3/4 ·
    18.8 0.740 59.1 2.32 R 1/2 8 7/8 ·
    18.9 0.743 59.3 2.35 R 3/4 9 ·
    19.1 0.752 60.0 2.36 S 9 1/8 60 1/4
    19.2 0.757 60.4 2.38 S 1/4 9 1/4 ·
    19.3 0.760 60.7 2.39 S 1/2 9 3/8 ·
    19.4 0.764 61.0 2.40 S 3/4 9 1/2 ·
    19.5 0.768 61.3 2.41 T 9 5/8 61 1/2
    19.6 0.772 61.6 2.43 T 1/4 9 3/4 ·
    19.8 0.781 62.3 2.45 T 1/2 10 ·
    20.0 0.780 62.9 2.48 U 10 1/4 62 3/4
    20.2 0.795 63.5 2.50 U 1/2 10 1/2 ·
    20.3 0.800 63.8 2.51 V 10 5/8 63
    20.4 0.805 64.2 2.53 V 1/4 10 3/4 ·
    20.7 0.814 65.0 2.56 V 1/2 11 ·
    20.8 0.817 65.2 2.57 W 11 1/8 65
    20.9 0.821 65.5 2.58 W 1/4 11 1/4 ·
    20.9 0.824 65.8 2.59 W 1/2 11 3/8 ·
    21.0 0.830 66.2 2.61 W 3/4 11 1/2 ·
    21.2 0.834 66.5 2.62 X 11 5/8 66 1/4
    21.2 0.836 66.7 2.63 X 1/4 11 3/4 ·
    21.3 0.838 66.9 2.64 X 1/2 11 7/8 ·
    21.5 0.846 67.5 2.66 Y 12 67 1/2
    21.7 0.854 68.1 2.68 Y 1/2 12 1/4 ·
    21.9 0.861 68.8 2.71 Z 12 1/2 68 3/4
    22.1 0.870 69.4 2.73 Z +1/2 12 3/4 ·
    22.3 0.879 70.2 2.76 Z+1 13 ·
    22.6 0.890 71.0 2.80 Z+1.5 13.5 ·
    22.7 0.893 71.3 2.81 Z+2 · ·
    22.9 0.902 72.0 2.83 Z+2.5 · ·
    23.0 0.908 72.5 2.85 Z+3 · ·
    23.3 0.915 73.0 2.87 Z+3.5 · ·
    23.5 0.924 73.7 2.90 Z+4 · ·
    23.6 0.927 74.0 2.91 Z+4.5 · ·
    23.9 0.940 75.0 2.95 Z+5 · ·
    24.3 0.955 76.2 3.00 Z+6 · ·