How to determine your ring size
Use a ring that fits you to determine your ring size. Place your ring over the nearest size circle. The inner edge of the ring should align with the outer edge of the circle.
Convert your ring size to the ring size used on our website (British letters).
USA size Diam. inch. Diam. mm Circum. mm 0000 00 0 1/2 3/4 1 1 1/4 1 1/2 1 3/4 2 2 1/4 2 1/2 2 3/4 3 3 1/8 3 1/4 3 3/8 3 1/2 3 5/8 3 3/4 4 4 1/4 4 1/2 4 5/8 4 3/4 5 5 1/8 5 1/4 5 3/8 5 1/2 5 3/4 5 7/8 6 6 1/4 6 1/2 6 3/4 7 7 1/4 7 1/2 7 3/4 8 8 1/4 8 1/2 8 5/8 8 3/4 8 7/8 9 9 1/8 9 1/4 9 3/8 9 1/2 9 5/8 9 3/4 10 10 1/4 10 1/2 10 5/8 10 3/4 11 11 1/8 11 1/4 11 3/8 11 1/2 11 5/8 11 3/4 11 7/8 12 12 1/2 12 3/4 13 .390 .422 .454 .474 .482 .487 --- .503 --- .520 --- .536 --- .553 --- --- --- .569 --- --- .585 --- .601 --- --- .618 --- --- --- .634 --- --- .650 --- .666 --- .683 --- .699 --- .716 --- .732 --- --- --- .748 --- --- --- .764 --- --- .781 --- .797 --- --- .814 --- --- --- --- .830 --- --- .846 .862 --- .879 9.91 10.72 11.53 11.95 12.18 12.37 12.60 12.78 13.00 13.21 13.41 13.61 13.83 14.05 14.15 14.25 14.36 14.45 14.56 14.65 14.86 15.04 15.27 15.40 15.53 15.70 15.80 15.90 16.0 16.10 16.30 16.41 16.51 16.71 16.92 17.13 17.35 17.45 17.75 17.97 18.19 18.35 18.53 18.61 18.69 18.80 18.89 19.10 19.22 19.31 19.41 19.51 19.62 19.84 20.02 20.20 20.32 20.44 20.68 20.76 20.85 20.94 21.08 21.18 21.24 21.30 21.49 21.89 22.10 22.33 31.1 33.7 36.2 37.5 38.3 38.9 39.6 40.2 40.8 41.5 42.1 42.7 43.4 44.0 44.3 44.6 44.9 45.2 45.6 45.9 46.5 47.1 47.8 48.1 48.4 49.0 49.3 49.6 50.0 50.3 50.9 51.3 51.5 52.2 52.8 53.4 54.0 54.7 55.3 55.9 56.6 57.2 57.8 58.4 58.4 59.0 59.1 59.4 59.7 60.0 60.3 60.6 60.9 61.6 62.2 62.8 63.1 63.5 64.1 64.3 64.7 65.0 65.3 65.7 66.0 66.3 66.6 67.9 68.5 69.1
British French German Japanese Swiss --- --- --- A A 1/2 B B 1/2 C C 1/2 D D 1/2 E E 1/2 F F 1/2 --- G --- G 1/2 H H 1/2 I I 1/2 J --- J 1/2 K --- K 1/2 L --- L 1/2 M M 1/2 N N 1/2 O O 1/2 P P 1/2 Q Q 1/2 --- R --- R 1/2 --- S --- S 1/2 --- T --- T 1/2 U U 1/2 V --- V 1/2 W --- W 1/2 --- X --- X 1/2 Y Z Z 1/2 --- --- --- --- --- --- --- --- --- --- 41 1/2 --- 42 3/4 --- 44 --- --- 45 1/4 --- --- 46 1/2 --- 47 3/4 --- 49 --- --- 50 --- --- 51 3/4 --- --- 52 3/4 --- 54 --- 55 1/4 --- 56 1/2 --- 57 3/4 --- --- 59 --- --- --- 60 1/4 --- --- --- 61 1/2 --- --- 62 3/4 --- 63 --- --- 65 --- --- --- 66 1/4 --- --- 67 1/2 68 3/4 --- --- --- --- --- --- --- --- --- --- --- 13 1/2 --- 13 3/4 --- 14 --- --- --- 14 1/2 --- --- 15 --- 15 1/4 15 1/2 --- 15 3/4 --- --- --- 16 --- --- 16 1/2 --- 17 --- 17 1/4 --- 17 3/4 --- 18 --- 18 1/2 --- --- --- 19 --- --- --- 19 1/2 --- --- 20 --- 20 1/4 --- --- 20 3/4 --- --- --- 21 --- --- --- 21 1/4 21 3/4 --- 22 --- --- --- --- --- 1 --- --- --- 2 --- 3 --- 4 --- --- 5 --- 6 --- 7 --- 8 --- --- 9 --- --- 10 --- --- --- 12 --- 13 --- 14 --- 15 --- 16 --- 17 --- --- --- 18 --- --- --- 19 --- --- 20 21 22 --- --- 23 --- --- --- 24 --- --- --- 25 26 --- 27 --- --- --- --- --- --- --- --- --- 1 1/2 --- 2 3/4 --- 4 --- --- 5 1/4 --- --- 6 1/2 --- 7 3/4 --- 9 --- --- 10 --- --- 11 3/4 --- --- 12 3/4 --- 14 --- 15 1/4 --- 16 1/2 --- 17 3/4 --- --- 19 --- --- --- 20 1/4 --- --- --- 21 1/2 --- --- 22 3/4 --- 23 3/4 --- --- 25 --- --- --- 26 1/4 --- --- 27 1/2 28 3/4 --- ---
Select a ring size in one category, the rest will change to match.
