Ring Size Guide
Find your perfect fit before placing your order.
How to measure
Using a string or paper strip
1Wrap a thin strip of paper or string around your finger at the knuckle.
2Mark where the paper overlaps to complete the circle.
3Measure the length in millimeters — this is your circumference.
4Match your measurement to the chart below.
Using an existing ring
1Place a ring that fits well on a flat surface.
2Measure the inside diameter in millimeters.
3Match to the diameter column in the chart below.
4If between sizes, choose the larger size.
Diameter vs circumference
US size chart
| US Size | Diameter (mm) | Circumference (mm) | UK Size |
|---|---|---|---|
| 3 | 14.1 | 44.2 | F |
| 3.25 | 14.3 | 45.0 | F½ |
| 3.5 | 14.5 | 45.5 | G |
| 3.75 | 14.7 | 46.1 | G½ |
| 4 | 14.9 | 46.8 | H |
| 4.25 | 15.1 | 47.4 | H½ |
| 4.5 | 15.3 | 48.0 | I |
| 4.75 | 15.5 | 48.7 | I½ |
| 5 | 15.7 | 49.3 | J |
| 5.25 | 15.9 | 49.9 | J½ |
| 5.5 | 16.1 | 50.6 | K |
| 5.75 | 16.3 | 51.2 | K½ |
| 6 | 16.5 | 51.9 | L |
| 6.25 | 16.7 | 52.5 | L½ |
| 6.5 | 16.9 | 53.1 | M |
| 6.75 | 17.1 | 53.8 | M½ |
| 7 | 17.3 | 54.4 | N |
| 7.25 | 17.5 | 55.1 | N½ |
| 7.5 | 17.7 | 55.7 | O |
| 7.75 | 17.9 | 56.3 | O½ |
| 8 | 18.2 | 57.0 | P |
| 8.25 | 18.4 | 57.6 | P½ |
| 8.5 | 18.6 | 58.3 | Q |
| 8.75 | 18.8 | 59.1 | Q½ |
| 9 | 19.0 | 59.5 | R |
| 9.5 | 19.4 | 60.8 | S |
| 10 | 19.8 | 62.1 | T |
| 10.5 | 20.2 | 63.5 | U |
| 11 | 20.6 | 64.7 | V |
| 11.5 | 21.0 | 66.0 | W |
| 12 | 21.4 | 67.2 | X |
Before you order
- Measure your finger at the end of the day — fingers are slightly larger in the evening.
- Fingers swell in heat and shrink in cold — measure at room temperature.
- If you are between sizes, choose the larger size.
- For wide band rings (4mm+), go up half a size for comfort.
- We offer one free resize within 30 days of delivery.