The right fit should feel secure without pressing into the skin. Measure the same finger—and the same part of that finger—where you plan to wear your QINO Smart Ring.
Wrap
Use a non-stretch paper strip. Wrap it snugly around the finger without compressing the skin.
Mark
Mark the point where the strip overlaps. Measure twice, ideally at different times of day.
Match
Measure the strip in millimetres and compare the result with the finger-circumference column below.
| US / International size | Inside diameter | Finger circumference |
|---|---|---|
| 6 | 16.5 mm | 49–51 mm |
| 7 | 17.3 mm | 52–54 mm |
| 8 | 18.1 mm | 55–57 mm |
| 9 | 18.9 mm | 58–60 mm |
| 10 | 19.8 mm | 61–62 mm |
| 11 | 20.6 mm | 63–65 mm |
| 12 | 21.4 mm | 66–67 mm |
| 13 | 22.2 mm | 68–70 mm |
Size 14 is not available.
If your measurement falls between sizes, your fingers change noticeably through the day, or you are unsure about the fit, contact QINO before ordering.