Measure with a strip of paper
Wrap a strip of paper around the finger you will wear the ring on. Mark where it meets, lay it flat and measure that length in millimetres. Find it in the first column.
| Around the finger | US | UK | EU | JP |
|---|---|---|---|---|
| 49 mm | 5 | J½ | 49 | 9 |
| 52 mm | 6 | L½ | 52 | 12 |
| 54 mm | 7 | N½ | 54 | 14 |
| 57 mm | 8 | P½ | 57 | 16 |
| 60 mm | 9 | R½ | 60 | 19 |
| 62 mm | 10 | T½ | 62 | 21 |
| 65 mm | 11 | V½ | 65 | 24 |
| 67 mm | 12 | X½ | 67 | 26 |
| 70 mm | 13 | Z+1 | 70 | 29 |
| 72 mm | 14 | Z+3 | 72 | 31 |
Measure in the evening
Fingers are at their largest at the end of the day and in warm weather.
Order your true size
A smart ring has to stay in contact with your skin to read correctly. Too loose and it turns on your finger and loses the signal.
Index or middle finger
Those give the most reliable readings.
Take a minute to measure properly. For hygiene reasons, a ring that has been worn or tried on can be neither exchanged nor refunded. See our refund policy.