Measure an existing ring

1. Select an existing ring that fits the desired finger.
2. Measure the internal diameter of the ring (in mm).
3. Use the below chart to determine your ring size.

Internal Diameter (mm)	US Ring Size
14.1	3
14.9	4
15.7	5
16.5	6
17.3	7
18.1	8
19.0	9
19.8	10