Ring Size Guide
Not sure which size to choose? Use our quick guide below to find your perfect fit, based on either an existing ring or your finger measurement.
Find Your Ring Size
| US Size | UK Size | Inside Diameter (mm) | Finger Circumference (mm) |
|---|---|---|---|
| 5 | J½ | 15.7 | 49.3 |
| 5.5 | K½ | 16.1 | 50.6 |
| 6 | L½ | 16.5 | 51.8 |
| 6.5 | M½ | 16.9 | 53.1 |
| 7 | N½ | 17.3 | 54.4 |
| 7.5 | O½ | 17.7 | 55.7 |
| 8 | P½ | 18.1 | 57.0 |
| 8.5 | Q½ | 18.5 | 58.3 |
| 9 | R½ | 19.0 | 59.5 |
| 9.5 | S½ | 19.4 | 60.8 |
| 10 | T½ | 19.8 | 62.1 |
How To Measure
Method 1: Measure a Ring You Already Own
- Choose a ring that fits the intended finger
- Measure the inside diameter (mm)
- Match it using the conversion table below
Method 2: Measure Your Finger
- Wrap a thin strip of paper or string around your finger
- Mark where it overlaps and measure the length in millimetres
- Match the circumference to the chart below
Sizing Tips
- Measure at the end of the day (fingers swell slightly)
- Avoid measuring when cold — fingers shrink
- If between sizes, size up for comfort
- Stackable rings = tighter fit / Statement rings = looser fit
Still Not Sure?
We’re here to help. Contact us or visit a local jeweller for professional sizing.