How to choose the right ring size?
YOU HAVE A REFERENCE RING.
Print this ring sizer and follow the instructions.
When printing it is important not to adjust the scale in order to maintain the correct proportions. To be sure, check that the ruler measures 10 cm.
![ring size guide](https://cdn.shopify.com/s/files/1/0563/5145/7440/files/Castafiore_guide-des-tailles.png?v=1636725426)
YOU DO NOT HAVE A REFERENCE RING.
You must first determine the shape of your finger by following our guide below.
Measure your finger using a thread or tape measure.
Be sure to measure the finger you will be wearing your ring on as finger sizes may vary from hand to hand.
ADVICE
If you are unsure between two sizes, we advise you to choose the larger one .
Measure your finger preferably at the end of the day in a warm place because the size of the fingers may vary.
Above all, do not hesitate to contact us via our contact form if you are unsure of your size, we will be happy to help you.
Measure the circumference of your finger at the knuckle in mm and compare it to the numbers below the circles.
![](http://castafiore.fr/cdn/shop/files/forme_main_triangle.png?v=1635435070&width=100)
If the base of your finger is wider than the rest of the finger, take the measurement there.
![](http://castafiore.fr/cdn/shop/files/forme_main_losange.png?v=1635435067&width=100)
If the knuckle is wider than the rest of your finger, take the measurement there. The ring needs to resist a little when you put it on.
![](http://castafiore.fr/cdn/shop/files/forme_main_rectangle.png?v=1635435067&width=100)
If your finger is straight, simply take the measurement at the base.
(Re)discover our selection of rings
You may have other questions
Circonférence du doigt en mm
|
Diamètre de la bague en mm
|
Taille Europe
|
Taille USA
|
Taille UK
|
Taille Japon
|
44
|
14.01
|
44
|
3
|
-
|
4
|
45
|
14.33
|
45
|
3¼
|
-
|
5
|
46
|
14.65
|
46
|
3¼
|
-
|
6
|
47
|
14.97
|
47
|
4
|
H½
|
7
|
48
|
15.29
|
48
|
4½
|
I½
|
8
|
49
|
15.61
|
49
|
4¾
|
J½
|
9
|
50
|
15.92
|
50
|
5¼
|
L
|
10
|
51
|
16.24
|
51
|
5¾
|
-
|
11
|
52
|
16.56
|
52
|
6
|
M
|
12
|
53
|
16.88
|
53
|
6¼
|
N
|
13
|
54
|
17.20
|
54
|
6¾
|
O
|
14
|
55
|
17.52
|
55
|
7¼
|
P
|
15
|
56
|
17.83
|
56
|
7½
|
-
|
16
|
57
|
18.15
|
57
|
8
|
Q
|
17
|
58
|
18.47
|
58
|
8¼
|
Q½
|
18
|
59
|
18.79
|
59
|
8¾
|
R
|
19
|
60
|
19.11
|
60
|
9
|
R½
|
20
|
61
|
19.43
|
61
|
9½
|
S½
|
21
|
62
|
19.75
|
62
|
10
|
T¼
|
22
|
63
|
20.06
|
63
|
10¼
|
U½
|
23
|
64
|
20.38
|
64
|
10¾
|
V
|
24
|
65
|
20.70
|
65
|
11
|
V½
|
25
|
66
|
21.02
|
66
|
11½
|
W½
|
26
|
67
|
21.34
|
67
|
11¾
|
Y
|
27
|
68
|
21.66
|
68
|
12¼
|
Z
|
28
|
69
|
21.97
|
69
|
12½
|
-
|
29
|
70
|
22.29
|
70
|
13
|
-
|
30
|
71
|
22.61
|
71
|
13¼
|
-
|
31
|