Find the Perfect Fit for the Perfect Ring
Choosing the right size ensures your diamond ring is as comfortable as it is beautiful. Whether you're planning a surprise proposal or selecting a ring for yourself, our guide makes sizing simple.
💍 Option 1: Measure an Existing Ring
-
Use a ring that fits the desired finger.
-
Measure the inside diameter in millimeters.
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Match it to the sizing chart below to find the correct ring size.
📏 Option 2: Measure Your Finger
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Wrap a thin strip of paper or string around your finger.
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Mark where the ends meet.
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Measure the length in millimeters — this is your finger’s circumference.
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Use the chart below to find your size.
Tip: Measure at the end of the day, when fingers are slightly larger. Avoid measuring when your hands are cold.
💡 Our Advice for Surprise Proposals
If you're unsure of their size:
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Ask a close friend or family member.
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Borrow a ring they wear on the correct finger (left hand, ring finger).
🌍 Ring Size Conversion Chart
All of our rings are crafted in standard US sizes. View the chart below to see how US sizes map to finger circumference and convert to international sizes. Engagement rings, wedding bands, and fashion rings all follow the same size format.
|
Inside Circumference |
US, Canada, Mexico |
UK, Australia, Ireland, New Zealand, South Africa |
France |
Germany, Russia, Ukraine, Asia |
India, China, Japan, South America, Turkey, Israel |
Italy, Spain, Netherlands, Switzerland |
|
|
IN |
MM |
||||||
|
1.74 |
44.2 |
3 |
F |
44 |
14 |
4 |
4 |
|
1.77 |
44.8 |
3.25 |
F 1/2 |
45 |
14 1/4 |
--- |
4 5/8 |
|
1.79 |
45.5 |
3.5 |
G |
45.5 |
14 1/2 |
5 |
5 1/4 |
|
1.82 |
46.1 |
3.75 |
G 1/2 |
46 |
14 3/4 |
6 |
5 7/8 |
|
1.84 |
46.8 |
4 |
H |
47 |
15 |
7 |
6 1/2 |
|
1.87 |
47.4 |
4.25 |
H 1/2 |
47.5 |
--- |
--- |
7 1/8 |
|
1.89 |
48 |
4.5 |
I |
48 |
15 1/4 |
8 |
7 3/4 |
|
1.92 |
48.7 |
4.75 |
J |
48.5 |
15 1/2 |
--- |
8 3/8 |
|
1.94 |
49.3 |
5 |
J 1/2 |
49 |
15 3/4 |
9 |
9 |
|
1.97 |
50 |
5.25 |
K |
50 |
16 |
--- |
9 5/8 |
|
1.99 |
50.6 |
5.5 |
K 1/2 |
50.5 |
16 1/4 |
10 |
10 1/4 |
|
2.02 |
51.2 |
5.75 |
L |
51 |
--- |
11 |
10 7/8 |
|
2.04 |
51.9 |
6 |
L 1/2 |
52 |
16 1/2 |
12 |
11 1/2 |
|
2.07 |
52.5 |
6.25 |
M |
52.5 |
16 3/4 |
--- |
12 1/8 |
|
2.09 |
53.1 |
6.5 |
M 1/2 |
53 |
17 |
13 |
12 3/4 |
|
2.12 |
53.8 |
6.75 |
N |
54 |
--- |
--- |
13 3/8 |
|
2.14 |
54.4 |
7 |
N 1/2 |
54.5 |
17 1/4 |
14 |
14 |
|
2.17 |
55.1 |
7.25 |
O |
55 |
17 1/2 |
--- |
14 5/8 |
|
2.19 |
55.7 |
7.5 |
O 1/2 |
56 |
17 3/4 |
15 |
15 1/4 |
|
2.22 |
56.3 |
7.75 |
P |
56.5 |
18 |
--- |
15 7/8 |
|
2.24 |
57 |
8 |
P 1/2 |
57 |
--- |
16 |
16 1/2 |
|
2.27 |
57.6 |
8.25 |
Q |
58 |
18 1/4 |
--- |
17 1/8 |
|
2.29 |
58.3 |
8.5 |
Q 1/2 |
58.5 |
18 1/2 |
17 |
17 3/4 |
|
2.32 |
58.9 |
8.75 |
R |
59 |
18 3/4 |
--- |
18 3/8 |
|
2.34 |
59.5 |
9 |
R 1/2 |
60 |
19 |
18 |
19 |
|
2.37 |
60.2 |
9.25 |
S |
60.5 |
19 1/4 |
--- |
19 5/8 |
|
2.39 |
60.8 |
9.5 |
S 1/2 |
61 |
19 1/2 |
19 |
20 1/4 |
|
2.42 |
61.4 |
9.75 |
T |
61.5 |
--- |
--- |
20 7/8 |
|
2.44 |
62.1 |
10 |
T 1/2 |
62 |
19 3/4 |
20 |
21 1/2 |
|
2.47 |
62.7 |
10.25 |
U |
63 |
20 |
21 |
22 1/8 |
|
2.49 |
63.4 |
10.5 |
U 1/2 |
63.5 |
--- |
22 |
22 3/4 |
|
2.52 |
64 |
10.75 |
V |
64 |
20 1/2 |
--- |
23 3/8 |
|
2.54 |
64.6 |
11 |
V 1/2 |
65 |
20 3/4 |
23 |
24 |
|
2.57 |
65.3 |
11.25 |
W |
65.5 |
--- |
--- |
24 5/8 |
|
2.59 |
65.9 |
11.5 |
W 1/2 |
66 |
21 |
24 |
25 1/4 |
|
2.62 |
66.6 |
11.75 |
X |
67 |
21 1/4 |
--- |
25 7/8 |
|
2.65 |
67.2 |
12 |
X 1/2 |
67.5 |
21 1/2 |
25 |
26 1/2 |
|
2.68 |
68.1 |
12.25 |
Y |
68 |
--- |
--- |
27 1/8 |
|
2.71 |
68.5 |
12.5 |
Z |
69 |
21 3/4 |
26 |
27 3/4 |
|
2.72 |
69.1 |
12.75 |
Z 1/2 |
69.5 |
--- |
--- |
28 3/8 |
|
2.75 |
69.7 |
13 |
--- |
70 |
22 |
27 |
29 |