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Determining Your Ring Size
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Determining Your Ring Size
To determine your ring size:
- Wrap a piece of string or a strip of paper around your finger.
- Mark the point where the two ends meet.
- Measure the string or paper against a ruler to get the circumference of your finger.
- Divide that by 3.14 to get the diameter of your finger.
- Look up your ring size using the form below.
Convert your ring size to the ring size used in other countries.
Ring Size Chart
| Size in MM |
US & Canada |
Great Britain |
Japan |
France |
Switzerland |
Germany |
| 44.1 | 3 | F | 4 | 44 | 4 | 14 |
| 45.4 | 3 1/2 | G | 5 | 45 1/4 | 5 1/4 | 14 1/2 |
| 46.7 | 4 | H 1/2 | 7 | 46 1/2 | 6 1/2 | 15 |
| 48.0 | 4 1/2 | I 1/2 | 8 | 47 3/4 | 7 3/4 | 15 1/2 |
| 49.2 | 5 | J 1/2 | 9 | 49 | 9 | 15 3/4 |
| 50.5 | 5 1/2 | K 1/2 | 10 | 50 1/4 | 10 1/4 | 16 1/4 |
| 51.8 | 6 | L 1/2 | 12 | 51 1/2 | 11 1/2 | 16 1/2 |
| 53.1 | 6 1/2 | M 1/2 | 13 | 52 3/4 | 12 3/4 | 17 |
| 54.3 | 7 | O | 14 | 54 | 14 | 17 1/4 |
| 55.6 | 7 1/2 | P | 15 | 55 1/4 | 15 1/4 | 17 3/4 |
| 56.9 | 8 | Q | 16 | 56 1/2 | 16 1/2 | 18 |
| 58.2 | 8 1/2 | R | 17 | 57 3/4 | 17 3/4 | 18 1/2 |
| 59.4 | 9 | S | 18 | 59 | 19 | 19 |
| 60.7 | 9 1/2 | -- | 19 | 60 1/4 | 20 1/4 | 19 1/2 |
| 62.0 | 10 | T 1/2 | 20 | 61 1/2 | 21 1/2 | 20 |
| 63.3 | 10 1/2 | U 1/2 | 22 | 62 3/4 | 22 3/4 | 20 1/2 |
| 64.5 | 11 | V 1/2 | 23 | 64 | 24 | 20 3/4 |
| 65.8 | 11 1/2 | W 1/2 | 24 | 65 1/4 | 25 1/4 | 21 |
| 67.1 | 12 | Y | 25 | 66 1/2 | 26 1/2 | 21 1/4 |
| 68.3 | 12 1/2 | Z | 26 | 67 3/4 | 27 3/4 | 21 3/4 |
| 69.6 | 13 | -- | 27 | 69 | 29 | 22 |
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