To find out your ring size you can go to your nearest jewelry store or calculate it following one of these methods:
choose one ring that fits your ring finger;
place the ruler underneath your ring;
calculate the diameter of the ring circumference in mm
wrap a piece of paper around your finger at the base of the knuckle; it should slide over your knuckle with some resistance
using a pen, mark where the ends overlap;
lay it flat and use a ruler to measure the length in mm
44 mm
45 mm
46 mm
47 mm
48 mm
49 mm
50 mm
51 mm
52 mm
53 mm
54 mm
55 mm
56 mm
57 mm
58 mm
59 mm
60 mm
61 mm
62 mm
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
3
31/4
33/4
4
41/2
43/4
51/4
53/4
6
61/4
63/4
71/4
71/2
8
81/4
83/4
9
91/2
F1/2
G
H
H1/2
I1/2
J1/2
K
L
L1/2
M1/2
N1/2
O
P
P1/2
Q1/2
R
S
S1/2
5
7
10
11
12
13
14
15
16
17
18
19
20
21