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Ring

Ring Size Chart

Finger ring sizes and equivalents: Conversion chart for finger ring sizes compared to United States ring sizes as to Diameter and circumference in inches and millimeters, also given are sizes used in some of the other countries.

  Equivalent rings sizes - other countries
USA Size Diameter Diameter Circumfurence British French German Japanese Swiss
  Inches Millimeters Millimeters          
3 0.553 14.05 44.00 F 44 14 4 4
3.5 0.569 14.54 45.20     14.5    
4 0.585 14.86 46.50 H1/2   15 7  
4.5 0.601 15.27 47.80 I1/2   15.5 8  
5 0.617 15.68 49.05

J1/2

  15.75 9  
5.5 0.634 16.10 50.00 L 51 3/4     11 3/4
6 0.6550 16.51 51.50 M 52 3/4 16 1/2 12 12 3/4
6.5 0.666 16.92 52.80 N 54 17 13 14
7 0.683 17.35 54.00 O 55 1/4 17 1/4 14 15 1/4
7.5 0.699 17.75 55.30 P 56 1/2 17 3/4 15 16 1/2
8 0.716 18.09 56.60 Q 57 3/4 18 16 17 3/4
8.2 0.732 18.53 57.80     18 1/2 17  
9 0.748 18.89 59.10     19 18  
9.5 0.764 19.41 60.30     19 1/2 19  
10 0.781 12.84 61.60 T1/2   20 20  
10.5 0.797 20.20 62.80 U1/2   20 1/4 22  
11 0.814 20.68 64.10 V1/2   20 3/4 23  
11.5 0.843 21.08 65.30     21 24  
12 0.846 21.49 66.60 Y 67 1/2 21 1/4 25 27 1/2
12.5 0.862 21.89 67.90 Z 68 3/4 21 3/4 26 28 3/4
13 0.879 22.33 69.10     22 27