原址在此 http://www.18carat.co.uk/ringsizes.html
這是我多次比對以後, 所找到最精確的數據. 是美規的.
關於台灣的常用的所謂國際戒圍, 數據的錯誤還是很多, 目前我還沒有找到比較完整而足夠精確的數字.
Britain | Europe (French) | Japan | USA | Diameter 直徑mm | Circumference 週長mm |
| | | 0 | 11.54 | 36.25 |
A | | | | 11.90 | 37.38 |
| | 0 | | 12.00 | 37.70 |
A1/2 | | | | 12.10 | 38.01 |
B | | | | 12.30 | 38.64 |
| | | 1 | 12.37 | 38.86 |
B1/2 | | | | 12.50 | 39.27 |
| | | 11/4 | 12.58 | 39.52 |
C | | | | 12.70 | 39.90 |
| 0.15 | | 11/2 | 12.78 | 40.15 |
C1/2 | 0.53 | | | 12.90 | 40.53 |
| 0.84 | 1 | 13/4 | 13.00 | 40.84 |
| 1.00 | | | 13.05 | 41.00 |
Britain | Europe | Japan | USA | Diameter | Circumference |
D | 1.15 | | | 13.10 | 41.15 |
| 1.50 | | 2 | 13.21 | 41.50 |
D1/2 | 1.78 | | | 13.30 | 41.78 |
| 1.88 | 2 | | 13.33 | 41.88 |
| 2.00 | | | 13.37 | 42.00 |
| 2.13 | | 21/4 | 13.41 | 42.13 |
E | 2.41 | | | 13.50 | 42.41 |
| 2.76 | | 21/2 | 13.61 | 42.76 |
| 2.91 | 3 | | 13.66 | 42.91 |
E1/2 | 3.00 | | | 13.69 | 43.00 |
| 3.42 | | 23/4 | 13.82 | 43.42 |
F | 3.67 | | | 13.90 | 43.67 |
| 3.98 | 4 | | 14.00 | 43.98 |
| 4.00 | | | 14.01 | 44.00 |
| 4.14 | | 3 | 14.05 | 44.14 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
F1/2 | 4.30 | | | 14.10 | 44.30 |
| 4.74 | | 31/4 | 14.24 | 44.74 |
G | 4.92 | | | 14.30 | 44.92 |
| 5.00 | | | 14.32 | 45.00 |
| 5.02 | 5 | | 14.33 | 45.02 |
| 5.40 | | 31/2 | 14.45 | 45.40 |
G1/2 | 5.55 | | | 14.50 | 45.55 |
| 6.00 | | | 14.64 | 46.00 |
| 6.02 | | 33/4 | 14.65 | 46.02 |
| 6.06 | 6 | | 14.66 | 46.06 |
H | 6.18 | | | 14.70 | 46.18 |
| 6.68 | | 4 | 14.86 | 46.68 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
H1/2 | 6.81 | | | 14.90 | 46.81 |
| 7.00 | | | 14.96 | 47.00 |
| 7.12 | 7 | | 15.00 | 47.12 |
| 7.34 | | 41/4 | 15.07 | 47.34 |
I | 7.44 | | | 15.10 | 47.44 |
| 7.97 | | 41/2 | 15.27 | 47.97 |
| 8.00 | | | 15.28 | 48.00 |
I1/2 | 8.07 | | | 15.30 | 48.07 |
| 8.16 | 8 | | 15.33 | 48.16 |
| 8.63 | | 43/4 | 15.48 | 48.63 |
J | 8.69 | | | 15.50 | 48.69 |
| 9.00 | | | 15.60 | 49.00 |
| 9.20 | 9 | | 15.66 | 49.20 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
J1/2 | 9.32 | | 5 | 15.70 | 49.32 |
K | 9.95 | | 51/4 | 15.90 | 49.95 |
| 10.00 | | | 15.92 | 50.00 |
| 10.27 | 10 | | 16.00 | 50.27 |
K1/2 | 10.58 | | 51/2 | 16.10 | 50.58 |
| 11.00 | | | 16.23 | 51.00 |
L | 11.24 | | 53/4 | 16.31 | 51.24 |
| 11.30 | 11 | | 16.33 | 51.30 |
L1/2 | 11.87 | | 6 | 16.51 | 51.87 |
| 12.00 | | | 16.55 | 52.00 |
| 12.34 | 12 | | 16.66 | 52.34 |
M | 12.46 | | | 16.70 | 52.46 |
| 12.56 | | 61/4 | 16.73 | 52.56 |
| 13.00 | | | 16.87 | 53.00 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
M1/2 | 13.09 | | | 16.90 | 53.09 |
| 13.16 | | 61/2 | 16.92 | 53.16 |
| 13.41 | 13 | | 17.00 | 53.41 |
N | 13.72 | | | 17.10 | 53.72 |
| 13.85 | | 63/4 | 17.14 | 53.85 |
| 14.00 | | | 17.19 | 54.00 |
N1/2 | 14.35 | | | 17.30 | 54.35 |
| 14.44 | 14 | | 17.33 | 54.44 |
| 14.51 | | 7 | 17.35 | 54.51 |
O | 14.98 | | | 17.50 | 54.98 |
| 15.00 | | 71/4 | 17.56 | 55.00 |
| 15.48 | 15 | | 17.66 | 55.48 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
O1/2 | 15.61 | | | 17.70 | 55.61 |
| 15.76 | | 71/2 | 173/4 | 55.76 |
| 16.00 | | | 17.83 | 56.00 |
P | 16.23 | | | 17.90 | 56.23 |
| 16.45 | | 73/4 | 17.97 | 56.45 |
| 16.55 | 16 | | 18.00 | 56.55 |
P1/2 | 16.86 | | | 18.10 | 56.86 |
| 17.00 | | | 18.14 | 57.00 |
| 17.15 | | 8 | 18.19 | 57.15 |
Q | 17.49 | | | 18.30 | 57.49 |
| 17.59 | 17 | | 18.33 | 57.59 |
| 17.77 | | 81/4 | 18.39 | 57.77 |
| 18.00 | | | 18.46 | 58.00 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
Q1/2 | 18.12 | | | 18.50 | 58.12 |
| 18.40 | | 81/2 | 18.59 | 58.40 |
| 18.62 | 18 | | 18.66 | 58.62 |
R | 183/4 | | | 18.70 | 583/4 |
| 19.00 | | 83/4 | 18.78 | 59.00 |
R1/2 | 19.38 | | | 18.90 | 59.38 |
| 19.66 | | 9 | 18.99 | 59.66 |
| 19.69 | 19 | | 19.00 | 59.69 |
S | 20.00 | | | 19.10 | 60.00 |
| 20.38 | | 91/4 | 19.22 | 60.38 |
S1/2 | 20.63 | | | 19.30 | 60.63 |
| 20.73 | 20 | | 19.33 | 60.73 |
| 20.98 | | 91/2 | 19.41 | 60.98 |
| 21.00 | | | 19.42 | 61.00 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
T | 21.26 | | | 19.50 | 61.26 |
| 21.67 | | 93/4 | 19.63 | 61.67 |
| 21.76 | 21 | | 19.66 | 61.76 |
T1/2 | 21.89 | | | 19.70 | 61.89 |
| 22.00 | | | 19.74 | 62.00 |
| 22.33 | | 10 | 19.84 | 62.33 |
U | 22.52 | | | 19.90 | 62.52 |
| 22.83 | 22 | | 20.00 | 62.83 |
| 23.00 | | 101/4 | 20.05 | 63.00 |
U1/2 | 23.15 | | | 20.10 | 63.15 |
| 23.59 | | 101/2 | 20.24 | 63.59 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
V | 23.77 | | | 20.30 | 63.77 |
| 23.87 | 23 | | 20.33 | 63.87 |
| 23.99 | | | 20.37 | 63.99 |
| 24.28 | | 103/4 | 20.46 | 64.28 |
V1/2 | 24.40 | | | 20.50 | 64.40 |
| 24.91 | 24 | | 20.66 | 64.91 |
| 24.97 | | 11 | 20.68 | 64.97 |
W | 25.00 | | | 20.69 | 65.00 |
| 25.60 | | 111/4 | 20.88 | 65.60 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
W1/2 | 25.66 | | | 20.90 | 65.66 |
| 25.97 | 25 | | 21.00 | 65.97 |
| 26.00 | | | 21.01 | 66.00 |
| 26.22 | | 111/2 | 21.08 | 66.22 |
X | 26.29 | | | 21.10 | 66.29 |
X1/2 | 26.92 | | 103/4 | 21.30 | 66.92 |
| 27.01 | 26 | | 21.33 | 67.01 |
Y | 27.51 | | 12 | 21.49 | 67.51 |
| 28.02 | | | 21.65 | 68.02 |
| 28.05 | 27 | | 21.66 | 68.05 |
Y1/2 | 28.20 | | 121/4 | 21.71 | 68.20 |
Z | 28.77 | | 121/2 | 21.89 | 68.77 |
| 28.99 | | | 21.96 | 68.99 |
| 29.12 | 28 | | 22.00 | 69.12 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
Z1/2 | 29.43 | | | 22.10 | 69.43 |
| 29.49 | | 123/4 | 22.12 | 69.49 |
Z+1 | 29.99 | | | 22.28 | 69.99 |
| 30.15 | 29 | 13 | 22.33 | 70.15 |
Z+11/2 | 30.69 | | | 22.50 | 70.69 |
| 30.81 | | 131/4 | 22.54 | 70.81 |
| 31.00 | | | 22.60 | 71.00 |
| 31.19 | 30 | | 22.66 | 71.19 |
Z+2 | 31.31 | | | 22.70 | 71.31 |
| 31.47 | | 131/2 | 223/4 | 71.47 |
Z+21/2 | 32.01 | | 133/4 | 22.92 | 72.01 |
| 32.26 | 31 | | 23.00 | 72.26 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
Z+3 | 32.57 | | | 23.10 | 72.57 |
| 32.76 | | 14 | 23.16 | 72.76 |
| 33.01 | | | 23.24 | 73.01 |
Z+31/2 | 33.20 | | | 23.30 | 73.20 |
| 33.32 | | | 23.34 | 73.32 |
| 33.29 | 32 | | 23.33 | 73.29 |
| 33.42 | | 141/4 | 23.37 | 73.42 |
Z+4 | 33.83 | | | 23.50 | 73.83 |
| 33.98 | | 141/2 | 23.55 | 73.98 |
| 34.33 | 33 | | 23.66 | 74.33 |
Z+41/2 | 34.46 | | | 23.70 | 74.46 |
| 34.71 | | 143/4 | 23.78 | 74.71 |
| 34.99 | | | 23.87 | 74.99 |
|
Britain | Europe | Japan | USA | Diameter | Circumference |
Z+5 | 35.08 | | | 23.90 | 75.08 |
| 35.40 | 34 | 15 | 24.00 | 75.40 |
Z+51/2 | 35.71 | | | 24.10 | 75.71 |
| 36.00 | | 151/4 | 24.19 | 76.00 |
Z+6 | 36.34 | | | 24.30 | 76.34 |
| 36.43 | 35 | | 24.33 | 76.43 |
| 36.69 | | 151/2 | 24.41 | 76.69 |
Z+61/2 | 37.00 | | | 24.51 | 77.00 |
| 37.31 | | 153/4 | 24.61 | 77.31 |
| 37.47 | 36 | | 24.66 | 77.47 |
Z+7 | 37.60 | | | 24.70 | 77.60 |
| 38.00 | | 16 | 24.83 | 78.00 |
Z+71/2 | 38.23 | | | 24.90 | 78.23 |
| 38.54 | 37 | 161/4 | 25.00 | 78.54 |