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Ring Sizer

How to Determine Your Ring Size

1. Take a piece of string or cut a strip of paper no wider than 1/4".
2. Wrap the paper snugly around the base of your finger and mark the pstring/paper where it meets.
3. Check that it slips over the joints of the finger without difficulty.
4. Measure the marked length of paper and compare it to the size chart. This should give you a good idea of your ring size. If your ring falls between sizes, order the next larger ring size.

British Metric Continental American
A 37.8252 - 0.5
A 1/2 >38.4237 - 0.75
B 39.0222 - 1
B 1/2 9.6207 - 1.25
C 40.2192 - 1.5
C 1/2 40.8177 - 1.75
D 41.4162 1 2
D 1/2 42.0147 2 2.25
E 42.6132 - 2.5
E 1/2 43.2117 3 2.75
F 43.8102 4 3
F 1/2 44.4087 - 3.25
G 45.0072 5 3.25
G 1/2 45.6057 - 3.5
H 46.2042 6 3.75
H 1/2 46.8027 - 4
I 47.4012 7 4.25
I 1/2 47.9997 8 4.75
J 48.5982 - 4.75
J 1/2 49.1967 9 5
K 49.7952 10 5.25
K 1/2 50.3937 - 5.5
L 50.9922 11 5.75
L 1/2 51.5907 - 6
M 52.1892 12 6.25
M 1/2 52.7877 13 6.5
N 53.466 - 6.75
N 1/2 54.1044 14 7
O 54.7428 15 7
O 1/2 55.3812 - 7.25
P 56.0196 16 7.5
P 1/2 56.658 - 7.75
Q 57.2964 17 8
Q 1/2 57.9348 18 8.25
R 58.5732 - 8.5
R 1/2 59.2116 19 8.75
S 59.85 20 9
S 1/2 60.4884 - 9.25
T 61.1268 21 9.5
T 1/2 61.7652 22 9.75
U 62.4036 - 10
U 1/2 63.042 23 10.25