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International ring size comparison chart

There's no true standard in the UK for sizing a finger or reading a size from a wedding ring, but we have a number of services to help you get around this issue.

As a starting point, you can order a free ring sizer to get you started. That will be with you in just a few days and will give you a good idea of your finger size. From there, you can make use of our sample service to fine tune your size and make sure the profile of the ring won't affect the fit and comfort. Don't hestitate to get in touch if you need any guidance on finding the perfect size for your wedding ring.

For more advice on ring size, Liza's Blog has many useful posts on sizing.

Wedding Rings Direct use a leading edge (as opposed to centre) measurement for the majority of our rings. If you think the distinction may affect your choice of which size to order, please contact us for advice.

If you've been given a size in numbers, have a look at the size chart below to convert it to a letter.

If you've been given a numerical size, or one from another country, use this chart to convert sizes.
 Inner Circum (mm)InchesUK/IEEUUSFRCHInner Diam (mm)JPDE
41 1.61   41   41 1 13.05    
41.25 1.62 D     41 1/4 1 1/4 13.13    
41.5 1.63     2 41 1/2 1 1/2 13.21    
41.75 1.64       41 3/4 1 3/4 13.29   13 1/4
42 1.65 D 1/2 42   42 2 13.37 2  
42.25 1.66     2 1/4 42 1/4 2 1/4 13.45    
42.5 1.67 E     42 1/2 2 1/2 13.53   13 1/2
42.75 1.68     2 1/2 42 3/4 2 3/4 13.61    
43 1.69   43   43 3 13.69 3  
43.25 1.7 E 1/2     43 1/4 3 1/4 13.77   13 3/4
43.5 1.71     2 3/4 43 1/2 3 1/2 13.85    
43.75 1.72 F     43 3/4 3 3/4 13.93  
44 1.73   44 3 44 4 14.01 4 14
44.25 1.74       44 1/4 4 1/4 14.09  
44.5 1.75 F 1/2     44 1/2 4 1/2 14.16  
44.75 1.76     3 1/4 44 3/4 4 3/4 14.24   14 1/4
45 1.77 G 45   45 5 14.32 5
45.25 1.78       45 1/4 5 1/4 14.4  
45.5 1.79     3 1/2 45 1/2 5 1/2 14.48   14 1/2
45.75 1.8 G 1/2     45 3/4 5 3/4 14.56  
46 1.81   46 3 3/4 46 6 14.64 6
46.25 1.82 H     46 1/4 6 1/4 14.72   14 3/4
46.5 1.83       46 1/2 6 1/2 14.8  
46.75 1.84     4 46 3/4 6 3/4 14.88  
47 1.85 H 1/2 47   47 7 14.96 7 15
47.25 1.86     4 1/4 47 1/4 7 1/4 15.04  
47.5 1.87 I     47 1/2 7 1/2 15.12  
47.75 1.88       47 3/4 7 3/4 15.2    
48 1.89   48 4 1/2 48 8 15.28   15 1/4
48.25 1.9 I 1/2     48 1/4 8 1/4 15.36 8  
48.5 1.91       48 1/2 8 1/2 15.44    
48.75 1.92 J   4 3/4 48 3/4 8 3/4 15.52   15 1/2
49 1.93   49   49 9 15.6    
49.25 1.94     5 49 1/4 9 1/4 15.68 9  
49.5 1.95 J 1/2     49 1/2 9 1/2 15.76   15 3/4
49.75 1.96       49 3/4 9 3/4 15.84    
50 1.97 K 50 5 1/4 50 10 15.92    
50.25 1.98       50 1/4 10 1/4 16 10 16
50.5 1.99     5 1/2 50 1/2 10 1/2 16.07    
50.75 2 K 1/2     50 3/4 10 3/4 16.15    
51 2.01   51   51 11 16.23   16 1/4
51.25 2.02 L   5 3/4 51 1/4 11 1/4 16.31 11  
51.5 2.03       51 1/2 11 1/2 16.39    
51.75 2.04     6 51 3/4 11 3/4 16.47   16 1/2
52 2.05 L 1/2 52   52 12 16.55    
52.25 2.06       52 1/4 12 1/4 16.63 12  
52.5 2.07 M   6 1/4 52 1/2 12 1/2 16.71   16 3/4
52.75 2.08       52 3/4 12 3/4 16.79    
53 2.09   53   53 13 16.87    
53.25 2.1 M 1/2   6 1/2 53 1/4 13 1/4 16.95    
53.5 2.11       53 1/2 13 1/2 17.03 13 17
53.75 2.12 N   6 3/4 53 3/4 13 3/4 17.11    
54 2.13   54   54 14 17.19    
54.25 2.14       54 1/4 14 1/4 17.27   17 1/4
54.5 2.15 N 1/2   7 54 1/2 14 1/2 17.35 14  
54.75 2.16       54 3/4 14 3/4 17.43    
55 2.17 O 55 7 1/4 55 15 17.51   17 1/2
55.25 2.18       55 1/4 15 1/4 17.59    
55.5 2.19       55 1/2 15 1/2 17.67 15  
55.75 2.19 O 1/2   7 1/2 55 3/4 15 3/4 17.75   17 3/4
56 2.2   56   56 16 17.83    
56.25 2.21 P     56 1/4 16 1/4 17.9    
56.5 2.22     7 3/4 56 1/2 16 1/2 17.98 16 18
56.75 2.23       56 3/4 16 3/4 18.06    
57 2.24 P 1/2 57 8 57 17 18.14    
57.25 2.25       57 1/4 17 1/4 18.22   18 1/4
57.5 2.26 Q     57 1/2 17 1/2 18.3 17  
57.75 2.27     8 1/4 57 3/4 17 3/4 18.38    
58 2.28   58   58 18 18.46   18 1/2
58.25 2.29 Q 1/2   8 1/2 58 1/4 18 1/4 18.54    
58.5 2.3       58 1/2 18 1/2 18.62    
58.75 2.31 R     58 3/4 18 3/4 18.7 18  
59 2.32   59 8 3/4 59 19 18.78   18 3/4
59.25 2.33       59 1/4 19 1/4 18.86    
59.5 2.34 R 1/2     59 1/2 19 1/2 18.94    
59.75 2.35     9 59 3/4 19 3/4 19.02 19 19
60 2.36 S 60   60 20 19.1    
60.25 2.37     9 1/4 60 1/4 20 1/4 19.18    
60.5 2.38       60 1/2 20 1/2 19.26   19 1/4
60.75 2.39 S 1/2     60 3/4 20 3/4 19.34 20  
61 2.4   61 9 1/2 61 21 19.42    
61.25 2.41 T     61 1/4 21 1/4 19.5   19 1/2
61.5 2.42     9 3/4 61 1/2 21 1/2 19.58    
61.75 2.43       61 3/4 21 3/4 19.66 21  
62 2.44 T 1/2 62   62 22 19.74   19 3/4
62.25 2.45     10 62 1/4 22 1/4 19.81    
62.5 2.46 U     62 1/2 22 1/2 19.89    
62.75 2.47       62 3/4 22 3/4 19.97 22 20
63 2.48   63 10 1/4 63 23 20.05    
63.25 2.49 U 1/2     63 1/4 23 1/4 20.13    
63.5 2.5     10 1/2 63 1/2 23 1/2 20.21   20 1/4
63.75 2.51 V     63 3/4 23 3/4 20.29    
64 2.52   64   64 24 20.37 23  
64.25 2.53     10 3/4 64 1/4 24 1/4 20.45    
64.5 2.54 V 1/2     64 1/2 24 1/2 20.53   20 1/2
64.75 2.55     11 64 3/4 24 3/4 20.61    
65 2.56 W 65   65 25 20.69 24  
65.25 2.57       65 1/4 25 1/4 20.77   20 3/4
65.5 2.58     11 1/4 65 1/2 25 1/2 20.85    
65.75 2.59 W 1/2     65 3/4 25 3/4 20.93    
66 2.6   66 11 1/2 66 26 21.01 25 21
66.25 2.61 X     66 1/4 26 1/4 21.09    
66.5 2.62       66 1/2 26 1/2 21.17    
66.75 2.63     11 3/4 66 3/4 26 3/4 21.25   21 1/4
67 2.64 X 1/2 67   67 27 21.33 26  
67.25 2.65       67 1/4 27 1/4 21.41    
67.5 2.66 Y   12 67 1/2 27 1/2 21.49   21 1/2
67.75 2.67       67 3/4 27 3/4 21.57    
68 2.68   68 12 1/4 68 28 21.65 27  
68.25 2.69 Y 1/2     68 1/4 28 1/4 21.72   21 3/4
68.5 2.7       68 1/2 28 1/2 21.8    
68.75 2.71 Z   12 1/2 68 3/4 28 3/4 21.88    
69 2.72   69   69 29 21.96 28 22
69.25 2.73     12 3/4 69 1/4 29 1/4 22.04    
69.5 2.74 Z 1/2     69 1/2 29 1/2 22.12    
69.75 2.75       69 3/4 29 3/4 22.2    
70 2.76 Z+1 70 13 70 30 22.28   22 1/4
70.25 2.77       70 1/4 30 1/4 22.36 29  
70.5 2.78       70 1/2 30 1/2 22.44    
70.75 2.79 Z+1 1/2   13 1/4 70 3/4 30 3/4 22.52   22 1/2
71 2.8   71   71 31 22.6    
71.25 2.81 Z+2     71 1/4 31 1/4 22.68 30  
71.5 2.81     13 1/2 71 1/2 31 1/2 22.76   22 3/4
71.75 2.82       71 3/4 31 3/4 22.84    
72 2.83 Z+2 1/2 72 13 3/4 72 32 22.92    
72.25 2.84       72 1/4 32 1/4 23 31 23
72.5 2.85 Z+3   14 72 1/2 32 1/2 23.08    
72.75 2.86       72 3/4 32 3/4 23.16    
73 2.87   73   73 33 23.24   23 1/4
73.25 2.88 Z+3 1/2   14 1/4 73 1/4 33 1/4 23.32 32  
73.5 2.89       73 1/2 33 1/2 23.4    
73.75 2.9 Z+4     73 3/4 33 3/4 23.48   23 1/2
74 2.91   74 14 1/2 74 34 23.55    
74.25 2.92       74 1/4 34 1/4 23.63 33  
74.5 2.93 Z+4 1/2   14 3/4 74 1/2 34 1/2 23.71    
74.75 2.94       74 3/4 34 3/4 23.79   23 3/4
75 2.95 Z+5 75 75 35 23.87    
75.25 2.96 15 75 1/4 35 1/4 23.95
75.5 2.97   75 1/2 35.5 24.03 34 24
75.75 2.98 Z+5 ½ 15 1/4 75 3/4 35 3/4 24.11
76 2.99 76 76 36 24.19
76.25 3 Z+6   76 1/4 36 1/4 24.27 24 1/4
76.5 3.01 15 1/2 76 1/2 36.5 24.35 35
76.75 3.02 76 3/4 36 3/4 24.43
77 3.03 Z+6 ½ 77 15 3/4 77 37 24.51 24 1/2
77.25 3.04 77 1/4 37 1/4 24.59
77.5 3.05 Z+7 77 1/2 37.5 24.67 36
77.75 3.06 16 77 3/4 37 3/4 24.75 24 3/4
78 3.07 78   78 38 24.83
78.25 3.08 Z+7 ½   78 1/4 38 1/4 24.91
78.5 3.09 16 1/4 78 1/2 38.5 24.99 37 25
78.75 3.1 Z+8   78 3/4 38 3/4 25.07
79 3.11 79 16 1/2 79 39 25.15
79.25 3.12 79 1/4 39 1/4 25.23 25 1/4
79.5 3.13 Z+8 ½ 79 1/2 39.5 25.31 38
79.75 3.14 16 3/4 79 3/4 39 3/4 25.39
80 3.15 Z+9 80 80 40 25.46 25 1/2
80.25 3.16 17 80 1/4 40 1/4 25.54
80.5 3.17 80 1/2 40.5 25.62
80.75 3.18 Z+9 ½ 80 3/4 40 3/4 25.7 39
81 3.19 81 17 1/4 81 41 25.78 25 3/4
81.25 3.2 Z+10 81 1/4 41 1/4 25.86