Home > Ring Size Chart
To gain an accurate measurement, it is best to have your finger sized by a professional jeweller. You can also refer to the ring size chart below:


British, Irish, Australian & New Zealand Inside Diameter (inches) Inside Diameter (mm) Inside Circumference (inches) Inside Circumference (mm)
H 0.586 14.9 1.84 46.7
H 1/2 0.594 15.1 1.865 47.4
I 0.602 15.3 1.89 48
J 0.61 15.5 1.915 48.7
J 1/2 0.618 15.7 1.941 49.3
K 0.626 15.9 1.966 49.9
K 1/2 0.634 16.1 1.991 50.6
L 0.642 16.3 2.016 51.2
L 1/2 0.65 16.5 2.041 51.8
M 0.658 16.7 2.066 52.5
M 1/2 0.666 16.9 2.091 53.1
N 0.674 17.1 2.116 53.8
N 1/2 0.682 17.3 2.141 54.4
O 0.69 17.5 2.167 55
O 1/2 0.698 17.7 2.192 55.7
P 0.706 17.9 2.217 56.3
P 1/2 0.714 18.1 2.242 56.9
Q 0.722 18.3 2.267 57.6
Q 1/2 0.73 18.5 2.292 58.2
R 0.738 18.7 2.317 58.9
R 1/2 0.746 18.9 2.342 59.5
S 0.754 19.2 2.368 60.1
S 1/2 0.762 19.4 2.393 60.8
T 0.77 19.6 2.418 61.4
T 1/2 0.778 19.8 2.443 62.1
U 0.786 20 2.468 62.7
U 1/2 0.794 20.2 2.493 63.3
V 0.802 20.4 2.518 64
V 1/2 0.81 20.6 2.543 64.6
W 0.818 20.8 2.569 65.2
W 1/2 0.826 21 2.594 65.9
X 0.834 21.2 2.619 66.5
X 1/2 0.842 21.4 2.644 67.2
Y 0.85 21.6 2.669 67.8
Z 0.858 21.8 2.694 68.4