Use this guide to choose your approximate US ring size. For the most accurate result, measure at the end of the day when your hands are at a normal temperature.
Measure a ring you already own
- Choose a ring that fits the intended finger.
- Measure the inside diameter across the widest point in millimetres.
- Compare the measurement with the chart below.
US ring size chart
| US size | Inside diameter | Inside circumference |
|---|---|---|
| 4.5 | 15.3 mm | 48.0 mm |
| 5 | 15.7 mm | 49.3 mm |
| 5.5 | 16.1 mm | 50.6 mm |
| 6 | 16.5 mm | 51.9 mm |
| 6.5 | 16.9 mm | 53.1 mm |
| 7 | 17.3 mm | 54.4 mm |
| 7.5 | 17.7 mm | 55.7 mm |
| 8 | 18.1 mm | 57.0 mm |
| 8.5 | 18.5 mm | 58.3 mm |
| 9 | 18.9 mm | 59.5 mm |
| 9.5 | 19.4 mm | 60.8 mm |
| 10 | 19.8 mm | 62.1 mm |
Before choosing
- Measure the finger you plan to wear the ring on.
- Finger size can change with temperature and time of day.
- A wider band can feel tighter than a slim band.
- When between sizes, choose the larger size.
Fit note: Measurements are approximate. A local jeweller can provide the most accurate professional measurement.
