01
Wrap
Wrap the paper snugly around the base of your finger — secure, but not tight enough to leave a mark.
FIND YOUR FIT
Ring Size
Guide
A good ring should feel secure without feeling tight. Measure at home in a few minutes, then use the chart below to find your AURYN size.
AURYN SIZING
US sizes 4–17
Some rings are marked Adjustable and flex to fit a wider range of fingers — no exact measurement needed.
MEASURE AT HOME
Four simple steps
Use a thin strip of paper or string, a pen and a millimetre ruler. Measure the finger where you plan to wear the ring.
02
Mark
Mark the point where the ends meet. Keep the paper flat and avoid twisting it.
03
Measure
Lay it flat and measure the length in millimetres. This is the approximate inner circumference you need.
04
Match
Find the nearest measurement in the table. If you sit between sizes, choose the larger size.
A few things that help
- Measure later in the day, when fingers are usually slightly larger.
- Avoid measuring when your hands are very cold.
- Wider bands can feel tighter than narrow rings; sizing up may feel more comfortable.
- Measure more than once for confidence, especially if you are between sizes.
Adjustable rings
Pieces marked Adjustable have an open band designed to flex gently across a range of finger sizes. They are a good option if you are unsure of the exact measurement or like to move a ring between fingers.
SIZE CONVERSION
Ring size chart
| Inner circumference | US size | UK size | EU size |
|---|---|---|---|
| 46.8 mm | US 4 | H½ | 47 |
| 48.0 mm | US 4.5 | I½ | 48 |
| 49.3 mm | US 5 | J½ | 49 |
| 50.6 mm | US 5.5 | K½ | 50 |
| 51.9 mm | US 6 | L½ | 52 |
| 53.1 mm | US 6.5 | M½ | 53 |
| 54.4 mm | US 7 | N½ | 54 |
| 55.7 mm | US 7.5 | O½ | 56 |
| 57.0 mm | US 8 | P½ | 57 |
| 58.3 mm | US 8.5 | Q½ | 58 |
| 59.5 mm | US 9 | R½ | 59 |
| 60.8 mm | US 9.5 | S½ | 61 |
| 62.1 mm | US 10 | T½ | 62 |
| 63.4 mm | US 10.5 | U½ | 63 |
| 64.6 mm | US 11 | V½ | 65 |
| 65.9 mm | US 11.5 | W½ | 66 |
| 67.2 mm | US 12 | X½ | 67 |
| 68.5 mm | US 12.5 | Y½ | 68 |
| 69.7 mm | US 13 | Z½ | 70 |
| 71.0 mm | US 14 | — | 71 |
| 73.6 mm | US 15 | — | 74 |
| 76.2 mm | US 16 | — | 76 |
| 78.7 mm | US 17 | — | 79 |
Conversions are a practical guide and can vary slightly between manufacturers and ring profiles. If you are between sizes, we recommend choosing the larger option.
Still not sure?
Email us your measurement and the ring you are considering. We will help you choose the closest size before you order. You can also browse the Rings collection.