Arthemis Jewellery

Ring Size Conversion Chart

Finger size     Internal diameter                                                                   

British           European           mm            ins           Continental    American       Japanese

                    (French)             (German)                   (Swiss)                     

A                                           12.065       0.4750                          1/2                   

                          38               12.096       0.4762                                                  

A1/2                                       12.263      0.4828                           3/4                   

                          39                12.414      0.4887                                                  

B                                           12.459      0.9050                           1                             

B1/2                                       12.657      0.4983                           1 1/4                   

                          40                12.733      0.5013                                                  

C                                           12.852      0.5060                           1 1/2                   

C1/2                   41                13.051      0.5138                           1 3/4                   

D                                           13.246      0.5215             1            2                             

                          42                13.369      0.5263                                                  

D1/2                                       13.444      0.5293             2            2 1/4                   

E                                            13.640     0.5370                           2 1/2                   

                          43                13.687      0.5389                                                  

E1/2                                       13.838      0.5448             3            2 3/4                   

                          44                14.006      0.5514                                                  

F                                            14.034      0.5525             4            3                          4

F1/2                                        14.232      0.5603                           3 1/4                   

                          45                 14.324      0.5639                                                  

G                                            14.427      0.5680             5            3 1/4                    5

G1/2                                        14.625      0.5758                           3 1/2                   

                          46                 14.642      0.5765                                                     6

H                                            14.821      0.5835             6            3 3/4                   

                          47                 14.961      0.5890                                                  

H1/2                                        15.019      0.5913                           4                         7

I                                              15.215      0.5990             7            4 1/4                   

                          48                 15.279      0.6015                                                  

I1/2                                          15.413      0.6068             8            4 1/2                    8

                          49                 15.597      0.6141                                                  

J                                             15.608      0.6145                           4 3/4                   

J1/2                                         15.806      0.6223             9            5                         9

                          50                 15.916      0.6266                                                  

K                                             16.002      0.6300            10            5 1/4                   

K1/2                                         16.200      0.6378                           5 1/2                   10

                          51                  16.234      0.6391                                                  

L                                              16.396      0.6455            11           5 3/4                    11

                          52                  16.552      0.6517                                                  

L1/2                                          16.594     0.6533                           6                             

M                                              16.789     0.6610             12          6 1/4                    12

                          53                   16.871     0.6642                                                  

M1/2                                          16.988     0.6688             13          6 1/2                   

N                                               17.183    0.6765                           6 3/4                    13

                          54                    17.189    0.6767                                                  

N1/2                                           17.381    0.6843             14           7                             

                          55                    17.507    0.6893                                                  

O                                               17.577    0.6920             15            7                        14

O1/2                                           17.775    0.6998                            7 1/4     

P                                                17.971    0.7975            16            7 1/2                    15

                          57                    18.144     0.7143                                                  

P1/2                                           18.169     0.7153                           7 3/4                   

Q                                               18.364     0.7230            17            8                         16

                          58                    18.462     0.7269                                                  

Q1/2                                           18.562     0.7308            18            8 1/4                    17

R                                               18.758     0.7385                            8 1/2                   

                          59                    18.780     0.7394                                                  

R1/2                                           18.956     0.7463            19            8 3/4                   

                          60                    19.098     0.7519                                                  

S                                                19.152    0.7540             20            9                         18

S1/2                                           19.350     0.7618                            9 1/4                   

                          61                    19.416     0.7644                                                  

T                                                19.545     0.7695            21            9 1/2                    19

                          62                    19.736     0.7770                                                  

T1/2                                            19.741     0.7772           22             9 3/4                    20

U                                                19.930     0.7850                           10                        21

                          63                     20.054     0.7895                                                  

U1/2                                           20.137      0.7928          23             10 1/4                   22

V                                                20.333      0.8850          24             10 1/2                   

                          64                    20.372      0.8020                                                  

V1/2                                            20.531     0.8083                                                      23

                          65                    20.690      0.8146                           10 3/4                   

W                                               20.726      0.8160          25             11                             

W1/2                                           20.925      0.8238                           11 1/4                   

                          66                    21.008      0.8271                                                  

X                                                21.120      0.8315          26              11 1/2                  24

X1/2                                            21.318      0.8393                           11 3/4                   

                          67                    21.326      0.8396                                                  

Y                                                21.514      0.8470                            12                       25

                          68                    21.645      0.8522                                                  

Y1/2                                           21.712      0.8548                             12 1/4                   

Z                                               21.908      0.8625                             12 1/2                  26

                          69                   21.963      0.8647                                                  

Z1/2                                           22.106      0.8703                                                       27

Z+1                                            22.301      0.8780                             12 3/4                   

Z+2                   70                     22.695       0.8935                             13 

Z+3                   71                     23.089       0.9090                             13 1/2                   

Z+4                   72                                                                            14