From any drop box selectors, select the size from your country or region, the other regions ring size will be directly converted and shown on this ring size converter tool.
Please note the convertion are only close approximations and we are not responsible for the results
USA Size
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
Diameter in Inches
.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
Diameter in Millimeters
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
Circumference in Millimeters
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 Size
--- --- --- 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 ---
French Size
--- --- --- --- --- --- --- --- --- 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 --- ---
German Size
--- --- --- --- --- --- --- --- --- 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
Japanese Size
--- --- --- --- --- 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 --- --- --- 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
Swiss Size
--- --- --- --- --- --- --- --- --- 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 --- ---
Turkish Size
--- --- --- --- --- --- --- --- --- 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 --- ---
