Ring Size Guide
- Firstly, print this page following the below
- Confirm the correct size of your print out, ensure that page scaling set to”NONE”on you print dialog box.
- Measure the bar to ensure its exactly 1 inches.
- If the bar does not measure exactly 1 inch check the scaling & reprint.
Confirm print paper size


Ring Size Table
UK | US | ASIA | Circumference (mm) | Diameter (mm) |
0 | 36.5 | 11.63 | ||
¼ | 37.2 | 11.84 | ||
A | ½ | 37.8 | 12.04 | |
A½ | ¾ | 38.5 | 12.24 | |
B | 1 | 39.1 | 12.45 | |
B½ | 1¼ | 39.7 | 12.65 | |
C | 1½ | 40.4 | 12.85 | |
C½ | 1¾ | 1 | 41 | 13.06 |
D | 2 | 2 | 41.7 | 13.26 |
D½ | 2¼ | 42.3 | 13.46 | |
E | 2½ | 3 | 42.9 | 13.67 |
E½ | 2¾ | 4 | 43.6 | 13.87 |
F | 3 | 44.2 | 14.07 | |
F½ | 3¼ | 5 | 44.8 | 14.27 |
G | 3½ | 45.5 | 14.48 | |
G½ | 3¾ | 6 | 46.1 | 14.68 |
H | 4 | 46.8 | 14.88 | |
H½ | 4¼ | 7 | 47.4 | 15.09 |
I | 4½ | 8 | 48 | 15.29 |
J | 4¾ | 9 | 48.7 | 15.49 |
J½ | 5 | 49.3 | 15.7 | |
K | 5¼ | 10 | 50 | 15.9 |
K½ | 5½ | 50.6 | 16.1 | |
L | 5¾ | 11 | 51.2 | 16.31 |
L½ | 6 | 12 | 51.9 | 16.51 |
M | 6¼ | 52.5 | 16.71 | |
M½ | 6½ | 13 | 53.1 | 16.92 |
N | 6¾ | 53.8 | 17.12 | |
N½ | 7 | 14 | 54.4 | 17.32 |
O | 7¼ | 15 | 55.1 | 17.53 |
O½ | 7½ | 55.7 | 17.73 | |
P | 7¾ | 16 | 56.3 | 17.93 |
P½ | 8 | 17 | 57 | 18.14 |
Q | 8¼ | 57.6 | 18.34 | |
Q½ | 8½ | 18 | 58.3 | 18.54 |
R | 8¾ | 19 | 58.9 | 18.75 |
R½ | 9 | 59.5 | 18.95 | |
S | 9¼ | 20 | 60.2 | 19.15 |
S½ | 9½ | 21 | 60.8 | 19.35 |
T | 9¾ | 61.4 | 19.56 | |
T½ | 10 | 22 | 62.1 | 19.76 |
U | 10¼ | 23 | 62.7 | 19.96 |
U½ | 10½ | 63.4 | 20.17 | |
V | 10¾ | 24 | 64 | 20.37 |
V½ | 11 | 25 | 64.6 | 20.57 |
W | 11¼ | 65.3 | 20.78 | |
W½ | 11½ | 26 | 65.9 | 20.98 |
X | 11¾ | 66.6 | 21.18 | |
X½ | 12 | 27 | 67.2 | 21.39 |
Y | 12¼ | 28 | 67.8 | 21.59 |
Z | 12½ | 68.5 | 21.79 | |
Z½ | 12¾ | 29 | 69.1 | 22 |
13 | 30 | 69.7 | 22.2 | |
Z1 | 13¼ | 70.4 | 22.4 | |
13½ | 31 | 71 | 22.61 | |
Z2 | 13¾ | 32 | 71.7 | 22.81 |
Z3 | 14 | 72.3 | 23.01 | |
14¼ | 33 | 72.9 | 23.22 | |
Z4 | 14½ | 73.6 | 23.42 | |
14¾ | 34 | 74.2 | 23.62 | |
15 | 35 | 74.8 | 23.83 | |
15¼ | 75.5 | 24.03 | ||
15½ | 36 | 76.1 | 24.23 | |
15¾ | 76.8 | 24.43 | ||
16 | 37 | 77.4 | 24.64 |