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Designer handmade jewellery that brings glamour into your life

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Ring Size Guide

The following is a ring size chart comparing the most widely used sizing methods used around the world, in the most common sizes. If your finger is smaller or larger than indicated below, please contact me for more information on sizes.
 
Inside
Inside
Inside
Inside
Number Sizes
Approx.
Approx.
Approx.
Diameter
Diameter
Circumference
Circumference
US/Canada
British/
Japanese
Swiss
(inches)
(mm)
(inches)
(mm)
Standard
Australian
Equivalent
Equivalent
 
 
 
 
 
Equivalent
 
 
0.618
15.7
1.941
49.3
5
J 1/2
9
 
0.626
15.9
1.966
49.9
5 1/4
K
 
10.00
0.634
16.1
1.991
50.6
5 1/2
K 1/2
10
 
0.642
16.3
2.016
51.2
5 3/4
L
 
11.75
0.650
16.5
2.041
51.8
6
L 1/2
11
12.75
0.658
16.7
2.066
52.5
6 1/4
M 
12
 
0.666
16.9
2.091
53.1
6 1/2
M 1/2
13
14.00
0.674
17.1
2.116
53.8
6 3/4
N
 
 
0.682
17.3
2.141
54.4
7
N 1/2
14
15.25
0.690
17.5
2.167
55.0
7 1/4
O 
 
 
0.698
17.7
2.192
55.7
7 1/2
O 1/2
15
16.50
0.706
17.9
2.217
56.3
7 3/4
P 
 
 
0.714
18.1
2.242
56.9
8
P 1/2
16
17.75
0.722
18.3
2.267
57.6
8 1/4
Q 
 
 
0.730
18.5
2.292
58.2
8 1/2
Q 1/2
17
 
0.738
18.7
2.317
58.9
8 3/4
R
 
19
0.746
18.9
2.342
59.5
9
R 1/2
18
 
0.754
19.2
2.368
60.1
9 1/4
S
 
20.25
0.762
19.4
2.393
60.8
9 1/2
S 1/2
19
 
0.770
19.6
2.418
61.4
9 3/4
T
 
21.5
0.778
19.8
2.443
62.1
10
T 1/2
20
 
0.786
20.0
2.468
62.7
10 1/4
U
21
 
0.794
20.2
2.493
63.3
10 1/2
U 1/2
22
22.75
0.802
20.4
2.518
64.0
10 3/4
V
 
 
0.810
20.6
2.543
64.6
11
V 1/2
23
 
 

Ring sizing is difficult to guess, even in person, without being measured using a ring gauge sizer. Keep in mind that finger size is prone to change with temperature, humidity, exercise, what you have been eating, time of day, time of the month, pregnancy and other factors. Your dominant hand is usually 1/2 size larger. Take the knuckle into consideration when sizing – the base of your finger may be smaller than your knuckle, yet it needs to get over the knuckle to slip on.

The best size is the ring that fits snugly and gives a little resistance when you take it off. Rings with wide bands should be a little looser than narrow rings.

As a guide, the average ring finger sizes for women are a size 6 to 8 (US equivalent) / L to Q (British equivalent).

Note: I tend to use the US equivalent for sizing the rings you see on this site.

 

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