Ring Size Guide
RING SIZE GUIDE
Find your perfect fit before you order.
METHOD 1 — MEASURE AN EXISTING RING
The easiest method if you already own a ring that fits perfectly.
Place it on a ruler and measure the inner diameter in millimeters. Match it to the table below.
METHOD 2 — MEASURE YOUR FINGER
Wrap a thin strip of paper around the base of your finger.
Mark where the ends meet and measure the length in millimeters — this is your finger circumference.
Match it to the table above.
- Measure at the end of the day when fingers are slightly larger.
- Avoid measuring when fingers are cold — they shrink.
- For wide band rings, we recommend choosing 1–2 sizes larger for a more comfortable fit.
- If you are between sizes, choose the larger size.
RING SIZE TABLE
| Inner Diameter (mm) | Japanese Size | EU Size | US Size | Circumference (mm) |
|---|---|---|---|---|
| 13.7 | 3 | 42 | 3 | 42.9 |
| 14.4 | 5 | 44.5 | 3½ | 45.0 |
| 15.0 | 7 | 47 | 4½ | 47.1 |
| 15.7 | 9 | 49 | 5 | 49.2 |
| 16.4 | 11 | 51 | 6 | 51.3 |
| 17.0 | 13 | 53 | 6½ | 53.4 |
| 17.7 | 15 | 55.5 | 7½ | 55.5 |
| 18.4 | 17 | 57.5 | 8½ | 57.6 |
| 19.0 | 19 | 59.5 | 9 | 59.7 |
| 19.7 | 21 | 62 | 10 | 61.8 |
| 20.4 | 23 | 64 | 10½ | 63.9 |
| 21.0 | 25 | 66 | 11½ | 66.0 |
| 21.7 | 27 | 68 | 12½ | 68.0 |
| 22.3 | 29 | 70 | 13 | 70.1 |
JAPANESE SIZING
Our rings use official Japanese sizing (号 – Go), the standard used for all rings we import directly from Japan.
Not sure about your size?
Visit our store — we have sample rings in all available sizes for you to try.
