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 |
|
|
