Ring Sizing Guide
Let's help you get the perfect fit
We have 3 easy ways to help you know the right ring size for you, or the right ring size for someone you would like to surprise. Rosea Luna rings follow the US & Canada ring sizes. If you know your ring size according to different sizing standards, please use the Ring Sizing Chart below to locate your US & Canada size.
1. Measure an Existing Ring

- Select a ring you have that you know fits your finger (or fits the other person's finger if you're buying a gift)
- Measure the internal diameter of the ring in mm.
- Use the chart below to determine your ring size in US & Canada sizes.
Ring Sizing Chart
Circumference (mm)
|
Diameter (mm)
|
US & Canada |
Europe |
UK & Australia |
46.8
|
14.9
|
4 |
47 |
H |
49.3
|
15.7
|
5 |
49 |
J |
51.9 |
16.5 |
6 |
52 |
L |
54.4 |
17.3 |
7 |
54 |
N |
57.0 |
18.1 |
8 |
57 |
P |
59.5 |
19 |
9 |
60 |
R |
62.1 |
19.8 |
10 |
62 |
T |
2. Download Our Ring Sizing Guide
This way is perfect for you if you are trying to surprise a loved one with a gift. Download our Ring Sizing Guide and match the ring you have to the ring sizes on the guide. Make sure you print the guide at 100%.
3. Measure Your Finger
- Use a piece of paper to wrap around your finger and mark the place where the two sides meet.
- Place the paper flat on a surface and measure the distance (in mm) between the marks to know the circumference of your finger.
- Use the Ring Sizing Chart to find your US & Canada ring size.