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Conversion chart for ring sizes

United Kingdom ,
Ireland ,
and Australia
United States
and Canada
French Germany Japanese Swiss
A ½ --- --- --- ---
A-½ ¾ --- --- --- ---
B 1 --- --- 1 ---
B-½ 1 1/4 --- --- --- ---
C 1 1/2 --- --- --- ---
C-½ 1 3/4 --- --- --- ---
D 2 41 1/2 13 1/4 2 1 1/2
D-½ 2 1/4 42 1/8 13 1/2 ---
E 2 1/2 42 3/4 13 3/4 3 2 3/4
E-½ 2 3/4 43 3/8 --- 3 3/8
F 3 44 14 4 4
F-½ 3 1/4 44 5/8 14 1/4 4 5/8
G 3 1/2 45 1/4 14 1/2 5 5 1/4
G-½ 3 3/4 45 7/8 14 3/4 6 5 7/8
H-½ 4 46 1/2 15 7 6 1/2
I 4 1/4 47 1/8 15 1/4 --- 7 1/8
I-½ 4 1/2 47 3/4 15 1/2 8 7 3/4
J 4 3/4 48 3/8 --- --- 8 3/8
J-½ 5 49 15 3/4 9 9
K 5 1/4 49 5/8 16 --- 9 5/8
K-½ 5 1/2 50 1/4 16 1/4 10 10 1/4
L 5 3/4 50 7/8 --- 11 10 7/8
L-½ 6 51 1/2 16 1/2 12 11 1/2
M 6 1/4 52 1/8 16 3/4 12 1/8
M-½ 6 1/2 52 3/4 17 13 12 3/4
N 6 3/4 53 3/8 --- --- 13 3/8
O 7 54 17 1/4 14 14
O-½ 7 1/4 54 5/8 17 1/2 14 5/8
P 7 1/2 55 1/4 17 3/4 15 15 1/4
P-½ 7 3/4 55 7/8 --- 15 7/8
Q 8 56 1/2 18 16 16 1/2
Q-½ 8 1/4 57 1/8 18 1/4 17 1/8
R 8 1/2 57 3/4 18 1/2 17 17 3/4
R-½ 8 3/4 58 3/8 18 3/4 18 3/8
S 9 59 19 18 19
S-½ 9 1/4 59 5/8 19 1/4 19 5/8
--- 9 1/2 60 1/4 19 1/2 19 20 1/4
T 9 3/4 60 7/8 19 3/4 20 7/8
T-½ 10 61 1/2 20 20 21 1/2
U 10 1/4 62 1/8 20 1/4 21 22 1/8
U-½ 10 1/2 62 3/4 20 1/2 22 22 3/4
V 10 3/4 63 3/8 --- 23 3/8
V-½ 11 64 20 3/4 23 24
W 11 1/4 64 5/8 --- 24 5/8

Measuring Guidelines

Finger sizes do not correspond to body size. Your fingers will usually swell in the evening and shrink in the morning. Other factors that contribute to ring size include temperature, humidity and exercise. Wider bands can be bought looser as can be rings for someone with large knuckles while smaller knuckles need a firmer fit. The best size fits snugly but has a little resistance when you remove the ring.

Therefore follow these measuring tips in order to get the right fit:

  • Measure your ring size in the evening when your fingers are at their largest.
  • Do not measure when your fingers are very hot or cold as ring size fluctuates with temperature.
  • After finding your ring size make sure you can slide the ring sizer over your knuckles and off your finger.