Ring Size Conversion Charts for Kids and International Sizes


Click here to find your ring size or use our handy ring chart below:

Baby and Kids Rings Size Guide
Please note these are suggested sizes based on averages.
Age of Child USA Ring Size
Less than 1 year old: 0.5
1 year old: 1
2 years old: 2
3 years old: 3
4 years old: 3
5 & 6 years old: 4
International Ring Size Conversion Chart
Inside Inside Inside Inside Number Sizes      
Diameter Diameter Circumference Circumference US/Canada Britain, Ireland, Australia Japan Switzerland
(inches) (mm) (inches) (mm) Standard Equivalent Equivalent Equivalent
               
0.458 11.6 1.438 36.5 0      
0.466 11.8 1.463 37.2 1/4      
0.474 12 1.488 37.8 1/2 A    
0.482 12.2 1.513 38.4 3/4 A 1/2    
0.49 12.4 1.539 39.1 1 B 1  
0.498 12.6 1.564 39.7 1 1/4 B 1/2    
0.506 12.9 1.589 40.4 1 1/2 C    
0.514 13.1 1.614 41 1 3/4 C 1/2    
0.522 13.3 1.639 41.6 2 D 2 1.5
0.53 13.5 1.664 42.3 2 1/4 D 1/2    
0.538 13.7 1.689 42.9 2 1/2 E 3 2.75
0.546 13.9 1.714 43.5 2 3/4 E 1/2    
0.554 14.1 1.74 44.2 3 F 4 4
0.562 14.3 1.765 44.8 3 1/4 F 1/2 5 5.25
0.57 14.5 1.79 45.5 3 1/2 G    
0.578 14.7 1.815 46.1 3 3/4 G 1/2 6 6.5
0.586 14.9 1.84 46.7 4 7  
0.594 15.1 1.865 47.4 4 1/4 H 1/2   7.75
0.602 15.3 1.89 48 4 1/2 8  
0.61 15.5 1.915 48.7 4 3/4 J   9
0.618 15.7 1.941 49.3 5 J 1/2 9  
0.626 15.9 1.966 49.9 5 1/4 K   10
0.634 16.1 1.991 50.6 5 1/2 K 1/2 10  
0.642 16.3 2.016 51.2 5 3/4 L   11.75
0.65 16.5 2.041 51.8 6 L 1/2 11 12.75
0.658 16.7 2.066 52.5 6 1/4 12  
0.666 16.9 2.091 53.1 6 1/2 M 1/2 13 14
0.674 17.1 2.116 53.8 6 3/4 N    
0.682 17.3 2.141 54.4 7 N 1/2 14 15.25
0.69 17.5 2.167 55 7 1/4    
0.698 17.7 2.192 55.7 7 1/2 O 1/2 15 16.5
0.706 17.9 2.217 56.3 7 3/4    
0.714 18.1 2.242 56.9 8 P 1/2 16 17.75
0.722 18.3 2.267 57.6 8 1/4    
0.73 18.5 2.292 58.2 8 1/2 Q 1/2 17  
0.738 18.7 2.317 58.9 8 3/4 R   19
0.746 18.9 2.342 59.5 9 R 1/2 18  
0.754 19.2 2.368 60.1 9 1/4 S   20.25
0.762 19.4 2.393 60.8 9 1/2 S 1/2 19  
0.77 19.6 2.418 61.4 9 3/4 T   21.5
0.778 19.8 2.443 62.1 10 T 1/2 20  
0.786 20 2.468 62.7 10 1/4 U 21  
0.794 20.2 2.493 63.3 10 1/2 U 1/2 22 22.75
0.802 20.4 2.518 64 10 3/4 V    
0.81 20.6 2.543 64.6 11 V 1/2 23  
0.818 20.8 2.569 65.2 11 1/4 W   25
0.826 21 2.594 65.9 11 1/2 W 1/2 24  
0.834 21.2 2.619 66.5 11 3/4 X    
0.842 21.4 2.644 67.2 12 X 1/2 25 27.5
0.85 21.6 2.669 67.8 12 1/4    
0.858 21.8 2.694 68.4 12 1/2 Z 26 28.75
0.866 22 2.719 69.1 12 3/4 Z 1/2    
0.874 22.2 2.744 69.7 13   27  
0.882 22.4 2.769 70.3 13 1/4 Z1    
0.89 22.6 2.795 71 13 1/2      
0.898 22.8 2.82 71.6 13 3/4 Z2    
0.906 23 2.845 72.3 14 Z3    
0.914 23.2 2.87 72.9 14 1/4      
0.922 23.4 2.895 73.5 14 1/2 Z4    
0.93 23.6 2.92 74.2 14 3/4      
0.938 23.8 2.945 74.8 15      
0.946 24 2.97 75.4 15 1/4      
0.954 24.2 2.996 76.1 15 1/2      
0.962 24.4 3.021 76.7 15 3/4      
0.97 24.6 3.046 77.4 16      

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