Is it very difficult for you to determine the accurate ring size?

Here, given below are various methods of determining the accurate size of your ring.
For accurate sizing, place a ring that fits you over the circle, making sure the inside of the ring lines up with the outside of the circle.


Another option is...
Print this page and cut out the ring sizer image provided here. Wrap the ring sizer around your finger with numbers facing out. When you have found a perfect fit, note the ring size number that appears at the end of the triangle.


The following chart shows conversion of local standard to the USA ring sizes.

Wrap a piece of string or a strip of paper around the finger, mark the ends and measure it against a ruler. Compare this with the length of a chart.

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

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