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Ring Size Chart

All of our ring sizes are quoted in UK letter sizing unless otherwise stated.

To get an approximate idea of your ring size, wrap a narrow strip of paper around your finger, mark the end and measure the length. Look under the "Circumference" column to the right of this screen and find the measurement, the second column will show you the UK letter equivalent.

The best place to obtain your finger size is at our Ruby Rock gallery or at a professional local jeweller.  We obviously cannot be responsible for you giving us an incorrect size.

If you need help in determining the right size for you, please contact us.

Our major styles are available in a wide range of sizes and we can custom make the ring for you.

US SizeUK SizeEu SizeCircumference
(mm)
Circumference
(inches)
4141.00 mm1.61"
D41.25 mm1.62"
2.0041.50 mm1.63"
41.75 mm1.64"
D 1/24242.00 mm1.65"
2.2542.25 mm1.66"
E42.50 mm1.67"
2.5042.75 mm1.68"
4343.00 mm1.69"
E 1/243.25 mm1.70"
2.7543.50 mm1.71"
F43.75 mm1.72"
3.004444.00 mm1.73"
44.25 mm1.74"
F 1/244.50 mm1.75"
3.2544.75 mm1.76"
G4545.00 mm1.77"
45.25 mm1.78"
3.5045.50 mm1.79"
G 1/245.75 mm1.80"
3.754646.00 mm1.81"
H46.25 mm1.82"
46.50 mm1.83"
4.0046.75 mm1.84"
H 1/24747.00 mm1.85"
4.2547.25 mm1.86"
I47.50 mm1.87"
47.75 mm1.88"
4.504848.00 mm1.89"
I 1/248.25 mm1.90"
48.50 mm1.91"
4.75J48.75 mm1.92"
4949.00 mm1.93"
5.0049.25 mm1.94"
J 1/249.50 mm1.95"
49.75 mm1.96"
5.25K5050.00 mm1.97"
50.25 mm1.98"
5.5050.50 mm1.99"
K 1/250.75 mm2.00"
5151.00 mm2.01"
5.75L51.25 mm2.02"
51.50 mm2.03"
6.0051.75 mm2.04"
L 1/25252.00 mm2.05"
52.25 mm2.06"
6.25M52.50 mm2.07"
52.75 mm2.08"
5353.00 mm2.09"
6.50M 1/253.25 mm2.10"
53.50 mm2.11"
6.75N53.75 mm2.12"
5454.00 mm2.13"
54.25 mm2.14"
7.00N 1/254.50 mm2.15"
54.75 mm2.16"
7.25O5555.00 mm2.17"
55.25 mm2.18"
55.50 mm2.19"
7.50O 1/255.75 mm2.19"
5656.00 mm2.20"
P56.25 mm2.21"
7.7556.50 mm2.22"
56.75 mm2.23"
8.00P 1/25757.00 mm2.24"
57.25 mm2.25"
Q57.50 mm2.26"
8.2557.75 mm2.27"
5858.00 mm2.28"
8.50Q 1/258.25 mm2.29"
58.50 mm2.30"
R58.75 mm2.31"
8.755959.00 mm2.32"
59.25 mm2.33"
R 1/259.50 mm2.34"
9.0059.75 mm2.35"
S6060.00 mm2.36"
9.2560.25 mm2.37"
60.50 mm2.38"
S 1/260.75 mm2.39"
9.506161.00 mm2.40"
T61.25 mm2.41"
9.7561.50 mm2.42"
61.75 mm2.43"
T 1/26262.00 mm2.44"
10.0062.25 mm2.45"
U62.50 mm2.46"
62.75 mm2.47"
10.256363.00 mm2.48"
U 1/263.25 mm2.49"
10.5063.50 mm2.50"
V63.75 mm2.51"
6464.00 mm2.52"
10.7564.25 mm2.53"
V 1/264.50 mm2.54"
11.0064.75 mm2.55"
W6565.00 mm2.56"
65.25 mm2.57"
11.2565.50 mm2.58"
W 1/265.75 mm2.59"
11.506666.00 mm2.60"
X66.25 mm2.61"
66.50 mm2.62"
11.7566.75 mm2.63"
X 1/26767.00 mm2.64"
67.25 mm2.65"
12.00Y67.50 mm2.66"
67.75 mm2.67"
12.256868.00 mm2.68"
Y 1/268.25 mm2.69"
68.50 mm2.70"
12.50Z68.75 mm2.71"
6969.00 mm2.72"
12.7569.25 mm2.73"
Z 1/269.50 mm2.74"
69.75 mm2.75"
13.00Z+17070.00 mm2.76"
70.25 mm2.77"
70.50 mm2.78"
13.25Z+1 1/270.75 mm2.79"