Size guide
THE PRIVATE ROOM
FINE JEWELRY
SIZE GUIDE
Ring Size Guide
Finding the perfect fit is essential for comfort and beauty. Use the guide below to determine your correct size before placing your order.
HOW TO MEASURE
Option 1 — Measure an Existing Ring
Choose a ring that fits the finger you'll wear the new ring on.
Measure the inside diameter in millimeters (mm), then use the chart below to find your size.
INSIDE DIAMETER
CONVERSION CHART
Find Your Size
| US | Diameter (mm) | Circumference (mm) | EU | UK |
|---|---|---|---|---|
| 3 | 14.1 | 44.2 | 44 | F |
| 3.5 | 14.5 | 45.5 | 45.5 | G |
| 4 | 14.9 | 46.8 | 47 | H |
| 4.5 | 15.3 | 48 | 48.5 | I |
| 5 | 15.7 | 49.3 | 49 | J |
| 5.5 | 16.1 | 50.6 | 51 | K |
| 6 | 16.5 | 51.9 | 52 | L |
| 6.5 | 16.9 | 53.1 | 53.5 | M |
| 7 | 17.3 | 54.4 | 54 | N |
| 7.5 | 17.7 | 55.7 | 56 | O |
| 8 | 18.1 | 57 | 57 | P |
| 8.5 | 18.5 | 58.3 | 58.5 | Q |
| 9 | 18.9 | 59.5 | 59 | R |
| 9.5 | 19.3 | 60.8 | 61 | S |
| 10 | 19.7 | 62.1 | 62 | T |
| 10.5 | 20.1 | 63.4 | 63.5 | U |
| 11 | 20.5 | 64.6 | 64.5 | V |
| 11.5 | 20.9 | 65.9 | 66 | W |
| 12 | 21.3 | 67.2 | 67.5 | X |
| 12.5 | 21.7 | 68.5 | 69 | Y |
| 13 | 22.1 | 69.7 | 70.5 | Z |
Between sizes? We recommend sizing up for the most comfortable fit.