Rosemairie Bridal Set in Size 5.5 Stacked with the Bubble Eternity Ring and worn with other Yellow Gold Bands



Kobelli's International Ring Size Guide


Methods for size conversion:

1. Use a string to wrap around the base of your finger. Stretch out the length of the string over a ruler and note the length in millimeters. A sewing tape measure will also do the trick. You can use this measurement to match to circumference in the chart below.

2. If you already have a ring that fits, or tested one at a local jeweler, get the inner diameter of the ring measured with a caliper rather than using a ring sizer or ring mandrel.
Inner Circumference (mm) / EU Ring Size
Inner Diameter (mm) / German Ring Size
US Ring Size / CA, MX
UK Ring Size / IE, AU, NZ
Japanese Ring Size / IN, CN, TW, KR, HK, SG
Swiss Ring Size / ES, IT
47
15
4
H ½
7
7.0
48
15.3
4.5
I ½
8
8.0
49
15.7
5
J ½
9
9.0
50
16
5.5
K ½
10.5
10.75
52
16.5
6
L ½
11.5
12.0
53
17
6.5
M ½
13
13.5
54
17.3
7
N ½
14
14.5
55
17.7
7.5
O ½
15
16.0
57
18.2 (US dime coin)
8
P ½
16.5
17.0
58
18.5
8.5
Q ½
17.5
18.5
59
19
9
R ½
19
20.0
61
19.5 (US penny coin)
9.5
S ½
20
21.0
62
20
10
T ½
21
22.5
63
20.2
10.5
U ½
22.5
23.5
64
20.7
11
V ½
24
25.0
66
21 (US nickel coin)
11.5
W ½
25
26.0
67
21.5
12
X ½
26.5
27.5
68
22
12.5
Z
28
29.0
69
22.2
13
Z ½
29
30.0



US Ring Size: United States of America, Canada, Mexico
European Ring Size: France, Sweden, Finland, Denmark, Norway, Belgium
German Ring Size: Germany, Argentina, Eastern EU
Japanese Ring Size (JCS standard): Japan, India, China, Taiwan, Korea, Hong Kong, Singapore
Swiss Ring Size: Switzerland, Spain, Italy (although Italy generally often uses the EU system, as well)



Sizing Tips

Things to keep in mind

  • Take temperatures into consideration. Our fingers tend to swell up a bit when it's hot making our finger size larger.
  • Opt for a snug fit but make sure your ring can still go over your knuckle with ease.
  • Your dominant hand's fingers may be bigger in size than your non-dominant one.
  • Remember that the wider the width of the band is, the tighter it will fit. We recommend going up in size between 1/4 and 1/2 for rings with a wider design. This may also apply when wearing bridal sets and stackable rings.
  • When in doubt, visit your local jeweler for an accurate sizing in person. Be sure to try on a few rings of differing widths while you are there to get a more accurate feel for your ideal fit.
US Ring Size Printable Guide

Printable PDF

Download and print our ring measuring guide to help find your size.

Print settings must be:
US Letter Size 8.5" x 11"
Full Scale 100%

DOWNLOAD SIZE GUIDE