Ring Size Guide

To determine your ring size:

  • Use some string or dental floss and wrap it around your finger.
  • Mark the point on the string where the end meets.
  • Measure the total length and compare it to the chart below.
  • Minimise any stretching or twisting of the string.
  • Measure 3 - 4 times to eliminate an erroneous reading.

The best way to size your finger is to visit a jeweller and get them to measure you.

As a guide, ring sizes 5-7 are SMALL, sizes 8-10 are MEDIUM, and sizes 11-12+ are LARGE.

Remember, AHW Studio provides FREE RESIZING on all its rings.

Circumference (MM) Diameter (MM) UK & Australia Ring Size USA Ring Size
46.8
14.9
4
47.4
15.1
I
48.0
15.3
48.7
15.5
J
49.3
15.7
5
50.0
15.9
K
50.6
16.1
51.2
16.3
L
51.9
16.5
6
52.5
16.7
M
53.1
16.9
53.8
17.1
N
54.4
17.3
7
55.1
17.5
O
55.7
17.7
56.3
17.9
P
57.0
18.1
8
57.6
18.3
Q
58.3
18.5
58.9
18.8
R
59.5
19.0
9
60.2
19.2
S
60.8
19.4
61.4
19.6
T
62.1
19.8
10
62.7
20.0
U
63.4
20.2
10½
64.0
20.4
V
64.6
20.6
11
65.3
20.8 W
65.9
21.0
11½
66.6
21.2
X
67.2
21.4
12
67.8
21.6
Y
68.5
21.8
Z
12½
69.1
22.0
69.7
22.2
13
70.4
22.4
Z+1
71.0
22.6
Z+2
13½