RING SIZE GUIDE
Ring Sizing Conversion Chart
The chart below provides a guide to ring sizes, including finger circumference and international size conversions.
All Lilly M. JEWELERS rings are crafted in standard US sizing,
ensuring consistency across our vintage-inspired engagement rings, wedding bands, and fine jewelry creations.
Inside Diameter
(mm) |
Circumference
(mm) |
US / Canada |
Continental Europe |
UK / AUS / NZ |
China / Japan / Korea |
| 14.07 |
44.20 |
3 |
4.25 |
F |
4 |
| 14.48 |
45.50 |
3.5 |
5.50 |
G |
5 |
| 14.88 |
46.80 |
4 |
6.75 |
H |
7 |
| 15.29 |
48.00 |
4.5 |
8.00 |
I |
8 |
| 15.70 |
49.30 |
5 |
9.25 |
J 1/2 |
9 |
| 16.10 |
50.60 |
5.5 |
10.50 |
K 1/2 |
10 |
| 16.51 |
51.90 |
6 |
11.75 |
L 1/2 |
12 |
| 16.92 |
53.10 |
6.5 |
13.25 |
M 1/2 |
13 |
| 17.32 |
54.40 |
7 |
14.50 |
N 1/2 |
14 |
| 17.73 |
55.70 |
7.5 |
15.75 |
O 1/2 |
15 |
| 18.14 |
57.00 |
8 |
17.00 |
P 1/2 |
16 |
| 18.54 |
58.30 |
8.5 |
18.25 |
Q 1/2 |
17 |
| 18.95 |
59.50 |
9 |
19.50 |
R 1/2 |
18 |
| 19.35 |
60.80 |
9.5 |
20.75 |
S 1/2 |
19 |
| 19.76 |
62.10 |
10 |
22.00 |
T 1/2 |
20 |
| 20.17 |
63.40 |
10.5 |
23.25 |
U 1/2 |
22 |
| 20.57 |
64.60 |
11 |
24.75 |
V 1/2 |
23 |
| 20.98 |
65.90 |
11.5 |
26.00 |
W 1/2 |
24 |
| 21.39 |
67.20 |
12 |
27.25 |
X 1/2 |
25 |
| 21.79 |
68.50 |
12.5 |
28.50 |
Y |
26 |
| 22.20 |
69.70 |
13 |
29.75 |
Z 1/2 |
27 |
How To Measure
Your Ring Size at Home
