The Ring Test
To measure an existing ring.
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Select a ring that fits the desired finger.
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With a ruler, measure the diameter of the internal circle of the ring in mm.
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Use the chart below to find the corresponding ring size.
Internal Diameter in MM | Ring Size |
14.1 mm |
3 |
14.9 mm |
4 |
15.7 mm |
5 |
16.5 mm |
6 |
17.3 mm |
7 |
18.1 mm |
8 |
19.0 mm |
9 |
19.8 mm |
10 |
20.6 mm |
11 |
21.4 mm |
12 |
22.2 mm |
13 |
The Paper Test
To measure your finger.
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Cut a strip of paper that is at least 10cm long.
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Wrap it snuggly around your finger, the tighter the better, to find your best fit.
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Using a pencil or a pen, mark where the ends overlap.
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Lay it flat and use a ruler to measure the length in mm.
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Use the chart below to find the corresponding ring size.
Circunference in MM | Ring Size |
44.2 mm |
3 |
46.8 mm |
4 |
49.3 mm |
5 |
51.8 mm |
6 |
54.4 mm |
7 |
56.9 mm |
8 |
59.5 mm |
9 |
62.1 mm |
10 |
64.6 mm |
11 |
67.2 mm |
12 |
69.7 mm |
13 |
Still Unsure?
You can visit any of our stores in Costa Rica to measure your ring size in person!