Sizing

The method to use is to measure the circumference of your finger, using the chart below to determine the size. Ideally have a jeweler measure your finger.

It is very important that you measure your finger several times on different days, and at different times of day... If you are in between two sizes, always go for the smaller one!

Once you have the circumference in millimeters, find the length on the chart below and match it with the ring size you need.

Ringsize Circumference (mm)
Ringsize Diameter (mm)
Ringsize USA/Canada (US ring size)
Ringsize United Kingdom (UK ring size)
Ringsize France (taille de bague)
Ringsize Japan

40
12,7
1.4 (1)
C
0,0
0,2

41
13
1.8 (1-)
C 1/2
1,0
1,1

42
13,4
2.2 (2)
D 1/2
2,0
2,1

43
13,7
2.6 (2-)
E 1/2
3,0
3,1

44
14,0
3.0 (2-)
F
4,0
4,0

45
14,3
3.4 (3)
G
5,0
5,0

46
14,6
3.7 (3-)
G 1/2
6,0
5,9

47
15,0
4.1 (4)
H 1/2
7,0
6,9

48
15,3
4.5 (4-)
I 1/2
8,0
7,8

49
15,6
4.9 (4-)
J
9,0
8,8

50
15,9
5.3 (5)
K
10
9,7

51
16,2
5.7 (5-)
K 1/2
11
10,7

52
16,6
6.1 (6)
L 1/2
12
11,6

53
16,9
6.4 (6)
M 1/2
13
12,6

54
17,2
6.8 (6-)
N
14
13,6

55
17,5
7.2 (7)
O
15
14,5

56
17,8
7.6 (7-)
P
16
15,5

57
18,1
8.0 (7-)
P 1/2
17
16,4

58
18,5
8.4 (8)
Q 1/2
18
17,4

59
18,8
8.7 (8-)
R
19
18,3

60
19,1
9.1 (9)
S
20
19,3

61
19,4
9.5 (9-)
T
21
20,2

62
19,7
9.9 (9-)
T 1/2
22
21,2

63
20,1
10.3 (10)
U 1/2
23
22,2

64
20,4
10.7 (10-)
V
24
23,1

65
20,7
11.0 (11)
W
25
24,1

66
21,0
11.4 (11)
X
26
25,0

67
21,3
11.8 (11-)
X 1/2
27
26,0

68
21,6
12.2 (12)
Y 1/2
28
26,9

69
22,0
12.6 (12-)
Z 1/2
29
27,9

70
22,3
13.0 (12-)
Z +1
30
28,8

71
22,6
13.5
Z +1.5
-
-

72
22,9
-
Z +2.5
-
-

73
23,2
-
Z +3.5
-
-

74
23,5
-
Z +4.5
-
-