Sizing Guide Information | Stephen Webster

Ring Size Guide

To measure your finger, you can use a tape measure. Measure the circumference of your finger in mm and find your corresponding size from the conversion chart below.

To get the most accurate measurement of your finger, measure at room temperature, when your hands are not unusually hot or cold.

Remember that your two hands differ slightly in size; a ring worn on a finger of the left hand may not be perfect for the finger on the right hand.

If you are hesitating between two size, choose the larger size.

 

Stephen Webster Circumference
(mm)
Diameter
(mm)
UK & Australia USA & Canada Europe China Singapore & Japan Hong Kong Switzerland
3 44.2 14.1 3 44 6 4 6 4
  44.8 14.3 G   45   5   5.25
3.5 45.5 14.5 3.5   7   7.5  
  46.1 14.7 H   46   6   6.5
4 46.8 14.9 4 47 8 7 9  
  47.4 15.1 I     9     7.75
4.5 48.0 15.3 4.5 48   8 10  
  48.7 15.5 J           9
5 49.3 15.7 5 49 10 9 11  
  50.0 15.9 K   50       10
5.5 50.6 16.1 5.5   11 10 12  
  51.2 16.3 L   51       11.75
6 51.9 16.5 6 52 12 11 13 12.75
  52.5 16.7 M     13 12    
6.5 53.1 16.9 6.5 53   13 14.5 14
  53.8 17.1 N     14      
7 54.4 17.3 7 54   14 16 15.25
  55.1 17.5 O   55 15      
7.5 55.7 17.7 7.5     15 17 16.5
  56.3 17.9 P   56 16      
8 57.0 18.1 8 57 17 16   17.75
  57.2 18.2           18  
  57.6 18.3 Q            
8.5 58.3 18.5 8.5 58 18 17 19  
  58.9 18.8 R   59       19
9 59.5 19.0 9   19 18 20.5  
  60.2 19.2 S   60 20     20.25
9.5 60.8 19.4 9.5 61   19 22  
  61.4 19.6 T     21     21.5
10 62.1 19.8 10 62   20 23  
  62.7 20.0 U     22 21    
10.5 63.4 20.2 10.5 63   22 24 22.75
  64.0 20.4 V   64 23      
11 64.6 20.6 11     23 25  
  65.3 20.8 W   65 24     25
11.5 65.9 21.0 11.5 66 25 24 26  
  66.6 21.2 X            
12 67.2 21.4 12 67 26 25 27.75 27.5
  67.8 21.6 Y            
12.5 68.5 21.8 Z 12.5 68   26   28.75
  69.1 22.0   69        
13 69.7 22.2   13 70   27 30  
  70.4 22.4 Z+1            
13.5 71.0 22.6 Z+2 13.5