Porter Lyons offers ring sizes 3–12 (US). Use this guide to find the correct fit before ordering. For assistance selecting a size, contact us directly.
The most accurate methods:
Visit a jeweler to be professionally sized with a ring mandrel.
Wrap a thin strip of paper snugly around the base of the finger. Mark where it overlaps, measure flat in millimeters, and match to the circumference column below.
If between sizes, size up — especially for wider bands (see Wide Band Sizing below).
Tip: Fingers are largest at the end of the day and in warm weather. Measure then for the most comfortable everyday fit.
|
US |
UK |
EU |
Circumference |
Diameter |
|---|---|---|---|---|
|
3 |
F |
44.0 |
44.0 mm |
14.0 mm |
|
3.5 |
G |
45.5 |
45.5 mm |
14.5 mm |
|
4 |
H |
46.8 |
46.8 mm |
14.9 mm |
|
4.5 |
I |
48.0 |
48.0 mm |
15.3 mm |
|
5 |
J 1/2 |
49.3 |
49.3 mm |
15.7 mm |
|
5.5 |
K 1/2 |
50.6 |
50.6 mm |
16.1 mm |
|
6 |
L 1/2 |
51.9 |
51.9 mm |
16.5 mm |
|
6.5 |
M 1/2 |
53.1 |
53.1 mm |
16.9 mm |
|
7 |
N 1/2 |
54.4 |
54.4 mm |
17.3 mm |
|
7.5 |
O 1/2 |
55.7 |
55.7 mm |
17.7 mm |
|
8 |
P 1/2 |
57.0 |
57.0 mm |
18.1 mm |
|
8.5 |
Q |
58.3 |
58.3 mm |
18.6 mm |
|
9 |
R |
59.5 |
59.5 mm |
18.9 mm |
|
9.5 |
S |
60.8 |
60.8 mm |
19.4 mm |
|
10 |
T |
62.1 |
62.1 mm |
19.8 mm |
|
10.5 |
U |
63.4 |
63.4 mm |
20.2 mm |
|
11 |
V |
64.6 |
64.6 mm |
20.6 mm |
|
11.5 |
W |
65.9 |
65.9 mm |
21.0 mm |
|
12 |
X 1/2 |
67.2 |
67.2 mm |
21.4 mm |
