Ring Size Guide
Find your
perfect fit.
A proper fit ensures accurate biometric readings. The Äureas Ring should feel snug but comfortable — you should be able to slide it off with slight effort.
How to Measure
Using a ring you own
Place a ring you already own flat on a ruler. Measure the inside diameter in millimeters. Find that measurement in the size chart below.
Using string or paper
Wrap a thin strip of paper around your finger. Mark where it overlaps. Measure the length in millimeters — this is your circumference. Find it in the chart below.
Fitting Tips
Measure at end of day
Fingers swell throughout the day. Measuring in the evening gives the most accurate fit.
Use your non-dominant hand
Most people wear the Äureas Ring on their index or middle finger of their non-dominant hand.
Account for knuckle size
If your knuckle is larger than your finger base, size up. The ring should slide over the knuckle with slight resistance.
When in doubt, size up
A ring that is slightly loose is more comfortable than one that is too tight. We recommend sizing up if you are between sizes.
Size Chart
| Äureas Size | Inner Diameter | Circumference | US Ring Size |
|---|---|---|---|
| 6 | 16.5mm | 51.8mm | 6 |
| 7 | 17.3mm | 54.4mm | 7 |
| 8 | 18.2mm | 57.2mm | 8 |
| 9 | 19.0mm | 59.7mm | 9 |
| 10 | 19.8mm | 62.2mm | 10 |
| 11 | 20.6mm | 64.7mm | 11 |
| 12 | 21.4mm | 67.2mm | 12 |
| 13 | 22.2mm | 69.7mm | 13 |