Ring Size Chart
All of our rings are listed using US sizing. Refer to our ring conversion chart below, to make sure you order the correct size.
| 
 U.S. Ring Size  | 
 U.K. Ring Size  | 
 Circumference (mm)  | 
 Diameter (mm)  | 
| 
 4 1/2  | 
 I 1/2  | 
 48  | 
 15.2  | 
| 
 5  | 
 J 1/2  | 
 49  | 
 15.6  | 
| 
 5 1/2  | 
 K 1/2  | 
 51  | 
 16  | 
| 
 6  | 
 L 1/2  | 
 52  | 
 16.5  | 
| 
 6 1/2  | 
 M 1/2  | 
 53  | 
 17.0  | 
| 
 7  | 
 N 1/2  | 
 55  | 
 17.3  | 
| 
 7 1/2  | 
 O 1/2  | 
 56  | 
 17.7  | 
| 
 8  | 
 P 1/2  | 
 57  | 
 18.2  | 
| 
 8 1/2  | 
 Q 1/2  | 
 58  | 
 18.6  | 
| 
 9  | 
 R 1/2  | 
 59  | 
 19.0  | 
| 
 9 1/2  | 
 S 1/2  | 
 61  | 
 19.4  | 
| 
 10  | 
 T 1/2  | 
 62  | 
 19.8  | 
| 
 10 1/2  | 
 U 1/2  | 
 63  | 
 20.2  | 
| 
 11  | 
 V 1/2  | 
 65  | 
 20.6  | 
| 
 11 1/2  | 
 W 1/2  | 
 66  | 
 21.0  | 
| 
 12  | 
 X 1/2  | 
 68  | 
 21.4  | 
| 
 12 1/2  | 
 Y 1/2  | 
 69  | 
 21.  | 
Refer to our measuring guide below to find the right ring size for you.
To measure using your finger circumference:
- Wrap a string around your finger where you’d like your ring to be.
 - To find your best fit, make sure that the string is pulled snugly around your finger but not too tight, it must slide easily around your finger.
 - Mark the spot where the two ends of the string meet and measure the distance with a ruler in millimeters.
 - Use the chart below to determine your ring size.
 
To measure using the diameter of an existing ring:
- 
Using a ring you already own that fits well, measure the inside diameter of the ring with a ruler in millimeters
 - 
Note down the measurement and match it to the chart below.
 - 
If your size falls in-between two sizes we suggest buying the larger size.
 - 
If you are still unsure about your ring size and you would like further assistance, please contact us at customercare@ethosoflondon.com
 





