Determining Your Ring Size

1. Find a piece of string or strip of paper.

2. Wrap it around the base of your appropriate finger. Make sure the paper fits snugly. You should be able to slip it over your knuckle.

3. Using a pen - mark the point on the string/paper where it overlaps forming a complete circle.


4. Measure the length from the starting end of the string/paper to the pen mark using a ruler with a millimeter measurement.


5. Check this measurement with the chart below to determine your ring size. To get the most accurate reading, make sure your hands and fingers are warm, preferably at room temperature.

6. You can also print out the Ring Size Template and measuring tool, cut the hole or use the tool to find out your appropriate ring size.

 

Number Sizes
Inside
Inside
British
Japanese
Hong Kong
Swiss
US/Canada
Diameter
Circumference
Irish
Equivalent
CHina
Equivalent
Standard
(mm)
(mm)
Australian
Equivalent
     
Equivalent
      
0
11.6
36.5
        
1/4
11.8
37.2
        
1/2
12.0
37.8
A
      
3/4
12.2
38.4
A 1/2
      
1
12.4
39.1
B
1
1 1/4
12.6
39.7
B 1/2
      
1 1/2
12.9
40.4
C
      
1 3/4
13.1
41.0
C 1/2
      
2
13.3
41.6
D
2
3
1.50
2 1/4
13.5
42.3
D 1/2
      
2 1/2
13.7
42.9
E
3
5
2.75
2 3/4
13.9
43.5
E 1/2
      
3
14.1
44.2
F
4
6
4.00
3 1/4
14.3
44.8
F 1/2
5
5.25
3 1/2
14.5
45.5
G
  
7.5
  
3 3/4
14.7
46.1
G 1/2
6
8.25
6.50
4
14.9
46.7
H
7
 
4 1/4
15.1
47.4
H 1/2
  
9
7.75
4 1/2
15.3
48.0
I
8
10
  
4 3/4
15.5
48.7
J
  
9.00
5
15.7
49.3
J 1/2
9
11
  
5 1/4
15.9
49.9
K
  
10.00
5 1/2
16.1
50.6
K 1/2
10
11.5
  
5 3/4
16.3
51.2
L
  
12
11.75
6
16.5
51.8
L 1/2
11
12.75
6 1/4
16.7
52.5
M
12

13

  
6 1/2
16.9
53.1
M 1/2
13
14.00
6 3/4
17.1
53.8
N
  
14.5
  
7
17.3
54.4
N 1/2
14
16
15.25
7 1/4
17.5
55.0
O
  
 
7 1/2
17.7
55.7
O 1/2
15
17
16.50
7 3/4
17.9
56.3
P
  
 
8
18.1
56.9
P 1/2
16
18
17.75
8 1/4
18.3
57.6
Q
  
19
  
8 1/2
18.5
58.2
Q 1/2
17
 
8 3/4
18.7
58.9
R
  
20.5
19
9
18.9
59.5
R 1/2
18
9 1/4
19.2
60.1
S
22
20.25
9 1/2
19.4
60.8
S 1/2
19
23
9 3/4
19.6
61.4
T
23.5
21.5
10
19.8
62.1
T 1/2
20
10 1/4
20.0
62.7
U
21
24
10 1/2
20.2
63.3
U 1/2
22
22.75
10 3/4
20.4
64.0
V
25
11
20.6
64.6
V 1/2
23
26
11 1/4
20.8
65.2
W
  
25
11 1/2
21.0
65.9
W 1/2
24
27.75
  
11 3/4
21.2
66.5
X
      
12
21.4
67.2
X 1/2
25
29
27.50
12 1/4
21.6
67.8
Y
12 1/2
21.8
68.4
Z
26
30
28.75
12 3/4
22.0
69.1
Z 1/2
      
13
22.2
69.7
  
27
    
13 1/4
22.4
70.3
Z1
      
13 1/2
22.6
71.0
        
13 3/4
22.8
71.6
Z2
      
14
23.0
72.3
Z3
      
14 1/4
23.2
72.9
        
14 1/2
23.4
73.5
Z4
      
14 3/4
23.6
74.2
        
15
23.8
74.8
        
15 1/4
24.0
75.4
        
15 1/2
24.2
76.1
        
15 3/4
24.4
76.7
        
16
24.6
77.4