Choosing the right ring size matters for comfort and how the jewelry looks on your hand.
This ring size chart includes EU, UK, and US standards, plus inner diameter and finger circumference in millimeters and inches.
Note: models marked as Uni have a universal size and usually fit most fingers thanks to an adjustable or flexible design.
Ring size conversion chart
| EU size |
Inner Ø (mm) |
Inner Ø (in) |
Circ. (mm)* |
Circ. (in)* |
UK size |
US size |
| 8 |
15.00 |
0.59 |
45 |
1.77 |
I |
5 |
| 9 |
15.33 |
0.60 |
46 |
1.81 |
J |
5 |
| 10 |
15.67 |
0.62 |
47 |
1.85 |
K |
6 |
| 11 |
16.00 |
0.63 |
48 |
1.89 |
L |
6 |
| 12 |
16.33 |
0.64 |
49 |
1.93 |
L |
6 |
| 13 |
16.67 |
0.66 |
50 |
1.97 |
M |
6 |
| 14 |
17.00 |
0.67 |
51 |
2.01 |
N |
7 |
| 15 |
17.33 |
0.68 |
52 |
2.05 |
O |
7 |
| 16 |
17.67 |
0.70 |
53 |
2.09 |
O |
7+ |
| 17 |
18.00 |
0.71 |
54 |
2.13 |
P |
8 |
| 18 |
18.33 |
0.72 |
55 |
2.17 |
Q |
8 |
| 19 |
18.67 |
0.74 |
56 |
2.20 |
R |
9 |
| 20 |
19.00 |
0.75 |
57 |
2.24 |
S |
9 |
| 21 |
19.33 |
0.76 |
58 |
2.28 |
S |
9+ |
| 22 |
19.67 |
0.77 |
59 |
2.32 |
T |
10 |
| 23 |
20.00 |
0.79 |
60 |
2.36 |
U |
10 |
* Finger circumference shown in millimeters and inches.
How to measure your ring size
You can use two simple methods: measure the inner diameter of a ring you already own or measure your finger circumference. Both are quick and help you choose the right fit.
Inner diameter
Use a ruler to measure the inner diameter of the ring (straight across the inside). Then match the result to the chart.
Finger circumference
Wrap a thin strip of paper or thread around your finger, mark where it overlaps, then measure the length. This value is your finger circumference—compare it with the chart.