Option 1 – Measure an Existing Ring

If you have a ring that fits perfectly, measure its inner diameter (in mm) and match it to our size chart:

Diameter (mm)	Size (US)
14.9	4
15.3	4.5
15.7	5
16.1	5.5
16.5	6
16.9	6.5
17.3	7
17.7	7.5
18.1	8
18.5	8.5
18.9	9

Option 2 – Measure Your Finger

1. Wrap a string or paper strip around your finger
2. Mark where it overlaps
3. Measure the length (in mm)
4. Match to our size chart

Circumference (mm)	Size (US)
46.8	4
48.0	4.5
49.3	5
50.6	5.5
51.9	6
53.1	6.5
54.4	7

Option 3 – Printable Ring Sizer

For the most accurate measurement, download and print our ring sizer guide:

Download Printable Sizer (PDF)