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Determining Your Ring Size

To determine your ring size simply take a narrow strip of paper, string or wire and wrap it comfortably around the finger that you wish to carry the ring. By comfortably that means not too tight as your knuckles are generally wider than the spot where you wear a ring.

Once you have measured your ring with the above technique, unfold the paper, string or wire and measure it carefully. The charts below will show your ring size in either millimeters or inches. 


Ring Size

Measured Size

USA

inches

mm

cm
4
1.8307″

46.5

4.65
4
1/2

1.8818″

47.8

4.78
5
1.9291″

49.0

4.90
5
1/2

1.9803″

50.3

5.03
6
2.0275″

51.5

5.15
6
1/2

2.0787″

52.8

5.28
7
2.1259″

54.0

5.40
7
1/2

2.1771″

55.3

5.53
8
2.2283″

56.6

5.66
8
1/2

2.2755″

57.8

5.78
9
2.3267″

59.1

5.91
9
1/2

2.3740″

60.3

6.03
10
2.4251″

61.6

6.16
10
1/2

2.4724″

62.8

6.28
11
2.5236″

64.1

6.41
11
1/2

2.5708″

65.3

6.53
12
2.6220″

66.6

6.66
12
1/2

2.6732″

67.9

6.79
13
2.7204″

69.1

6.91


 

 



International Ring Size Chart

USA & Canada Ring Size Diameter (Inches) Great Britain France (mm) Germany Japan Switzerland
000 0.390
00 0.422
0 0.454
½ 0.462 A
¾ 0.471 A-½
1 0.487 B 1
1 1/4 0.495 B-½
1 1/2 0.503 C
1 3/4 0.511 C-½
2 0.520 D 41 1/2 13 1/4 2 1 1/2
2 1/4 0.528 D-½ 42 1/8 13 1/2
2 1/2 0.536 E 42 3/4 13 3/4 3 2 3/4
2 3/4 0.544 E-½ 43 3/8 3 3/8
3 0.553 F 44 14 4 4
3 1/4 0.561 F-½ 44 5/8 14 1/4 4 5/8
3 1/2 0.569 G 45 1/4 14 1/2 5 5 1/4
3 3/4 0.577 G-½ 45 7/8 14 3/4 6 5 7/8
4 0.586 H-½ 46 1/2 15 7 6 1/2
4 1/4 0.594 I 47 1/8 15 1/4 7 1/8
4 1/2 0.602 I-½ 47 3/4 15 1/2 8 7 3/4
4 3/4 0.610 J 48 3/8 8 3/8
5 0.619 J-½ 49 15 3/4 9 9
5 1/4 0.627 K 49 5/8 16 9 5/8
5 1/2 0.635 K-½ 50 1/4 16 1/4 10 10 1/4
5 3/4 0.643 L 50 7/8 11 10 7/8
6 0.652 L-½ 51 1/2 16 1/2 12 11 1/2
6 1/4 0.660 M 52 1/8 16 3/4 12 1/8
6 1/2 0.668 M-½ 52 3/4 17 13 12 3/4
6 3/4 0.676 N 53 3/8 13 3/8
7 0.685 O 54 17 1/4 14 14
7 1/4 0.693 O-½ 54 5/8 17 1/2 14 5/8
7 1/2 0.701 P 55 1/4 17 3/4 15 15 1/4
7 3/4 0.709 P-½ 55 7/8 15 7/8
8 0.717 Q 56 1/2 18 16 16 1/2
8 1/4 0.726 Q-½ 57 1/8 18 1/4 17 1/8
8 1/2 0.734 R 57 3/4 18 1/2 17 17 3/4
8 3/4 0.742 R-½ 58 3/8 18 3/4 18 3/8
9 0.750 S 59 19 18 19
9 1/4 0.759 S-½ 59 5/8 19 1/4 19 5/8
9 1/2 0.767 60 1/4 19 1/2 19 20 1/4
9 3/4 0.775 T 60 7/8 19 3/4 20 7/8
10 0.783 T-½ 61 1/2 20 20 21 1/2
10 1/4 0.792 U 62 1/8 20 1/4 21 22 1/8
10 1/2 0.800 U-½ 62 3/4 20 1/2 22 22 3/4
10 3/4 0.808 V 63 3/8 23 3/8
11 0.816 V-½ 64 20 3/4 23 24
11 1/4 0.825 W 64 5/8 24 5/8
11 1/2 0.833 W-½ 65 1/4 21 24 25 1/4
11 3/4 0.841 X 65 7/8 25 7/8
12 0.849 Y 66 1/2 21 1/4 25 26 1/2
12 1/4 0.858 Y-½ 67 1/8 21 1/2 27 1/8
12 1/2 0.866 Z 67 3/4 21 3/4 26 27 3/4
12 3/4 0.874 Z-½ 68 3/8 28 3/8
13 0.882 69 22 27 29