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INTERNATIONAL RING SIZES REFERENCE GUIDE


ITALY

UNITED STATES
MEXICO
MALASIA
SINGAPORE

HONG KONG

ARGENTINA

BRAZIL

FRANCE
GERMANY
MIDDLE EAST
(METRIC)

KOREA

SWITZERLAND

TAIWAN

UNITED KINGDOM

AUSTRALIA

DIAMETER
INCH

DIAMETER
MILLIMETRE

CIRCUMFERENCE
MILLIMETRE
  2 3.5   5       4 D      
3 2.5 4.25   6.5   2.25     E      
4 3 6       3.5   5.5 F 0.553 14.05 44.00
5 3.25 6.25       4.25   6 F ½      
6 3.5 7   9   5   6.5 G ½ 0.569 14.54 45.20
7 4 8.5 8 10   6.25 7 7.5 H ½ 0.585 14.86 45.60
8 4.5 9.5 9 11 48 7.5 8 8.25 I ½ 0.601 15.27 47.80
9 5 11 10 12.5 49.5 8.5 9.5 9 J 0.617 15.68 49.05
10 5.5 12 11 14 50.5 10 10.75 9.25 K ½ 0.634 16.1 50.00
11 6 13 12 15 52 11 12 10.5 L ½ 0.65 16.51 51.50
12 6.25 14       11.5   11 M      
13 6.5 14.5 13 16 53 12 13.5 11.75 M ½ 0.666 16.92 52.80
14 7 15 14 17.5 54/55 13.25 14.5 12.5 N ½ 0.683 17.35 54.00
15 7.25 15.75       13.75   13 O ½      
16 7.5 16.5 15 18.5 56 14.5 16   P 0.669 17.75 55.30
17 8 18 17 20 57.5 16 17 14 Q 0.716 18.09 56.60
18 8.5 19 18 21 58.5 17.5   14.75 R 0.732 18.53 57.80
19 9 20 20 22.5 60 18.25   15.5 S 0.748 18.89 59.10
20 9.5 21 21 23.5 61 20   16.25 T 0.764 19.41 60.30
21 10 22 22 25 62.5 20.5   17 U 0.781 19.84 61.60
22 10.25 22.75       21.25   17.5 U ½      
23 10.5 23.5 23 26 63.5 22   18 V 0.797 20.2 62.80
24 11 24.75 24 27 65 23   19 W 0.814 20.68 64.10
25 11.25 25.25       25.5     W ½      
  11.5                 0.843 21.08 65.30
  12                 0.846 0.846 66.60
  12.5                 0.862 0.862 67.90
  13                 0.879 0.879 69.10

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