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Ring Size Guide

Finding the perfect ring size is essential for comfort and style. Whether you're shopping for yourself or looking to surprise a loved one, this ring size guide will help you compare ring sizes.
UK USA Europe Circumference Diameter
    38.00    
A   39.00 37.70 mm 12.00 mm
A ½   39.50 38.33 mm 12.20 mm
B   40.00 38.96 mm 12.40 mm
B ½ 0.75 40.80 39.58 mm 12.60 mm
C 1.25 41.00 40.53 mm 12.90 mm
C ½ 1.50 41.25 41.15 mm 13.10 mm
D 1.75 42.00 41.78 mm 13.30 mm
D ½ 2.00 42.50 42.41 mm 13.50 mm
E 2.25 43.50 43.04 mm 13.70 mm
E ½ 2.50 44.00 43.67 mm 13.90 mm
F 2.75 44.50 44.30 mm 14.10 mm
F ½ 3.00 45.00 44.92 mm 14.30 mm
G 3.25 45.50 45.55 mm 14.50 mm
G ½ 3.50 46.00 46.18 mm 14.70 mm
H 3.75 47.00 46.81 mm 14.90 mm
H ½ 4.00 47.50 47.44 mm 15.10 mm
I 4.25 48.00 48.07 mm 15.30 mm
I ½ 4.50 48.50 48.69 mm 15.50 mm
J 4.75 49.50 49.32 mm 15.70 mm
J ½ 5.00 50.00 49.95 mm 15.90 mm
K 5.25 50.50 50.58 mm 16.10 mm
K ½ 5.50 51.00 51.21 mm 16.30 mm
L 5.75 52.00 51.84 mm 16.50 mm
L ½ 6.00 52.50 52.46 mm 16.70 mm
M 6.25 53.00 53.09 mm 16.90 mm
M ½ 6.50 54.00 54.72 mm 17.10 mm
N 6.75 54.50 54.35 mm 17.30 mm
N ½ 7.00 55.00 54.98 mm 17.50 mm
O 7.25 55.75 55.61 mm 17.70 mm
O ½ 7.50 56.25 56.23 mm 17.90 mm
P 7.75 57.00 56.86 mm 18.10 mm
P ½ 8.00 57.25 57.49 mm 18.30 mm
Q 8.25 58.00 58.12 mm 18.50 mm
Q ½ 8.50 58.50 58.75 mm 18.70 mm
R 8.75 59.50 59.38 mm 18.90 mm
R ½ 9.00 60.00 60.00 mm 19.10 mm
S 9.25 60.50 60.63 mm 19.30 mm
S ½ 9.50 61.25 61.26 mm 19.50 mm
T 9.75 62.00 61.89 mm 19.70 mm
T ½ 10.00 62.50 62.52 mm 19.90 mm
U 10.25 63.00 63.15 mm 20.10 mm
U ½ 10.50 64.00 63.77 mm 20.30 mm
V 10.75 64.25 64.40 mm 20.50 mm
V ½ 11.00 65.00 65.03 mm 20.70 mm
W 11.25 65.50 65.66 mm 20.90 mm
W ½ 11.50 66.50 66.29 mm 21.10 mm
X 11.75 67.00 66.92 mm 21.30 mm
X ½ 12.00 67.50 67.54 mm 21.50 mm
Y 12.25 68.00 68.17 mm 21.70 mm
Y ½ 12.50 69.00 68.80 mm 21.90 mm
Z 12.75 69.50 69.43 mm 22.10 mm
Z ½ 13.00 70.00 70.06 mm 22.30 mm

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