How to find your ring size

Use the dropdown menus below to help find your circumference or diameter measurement. Next, use the chart to see which ring size corresponds to your measurement and find your perfect size.

Diameter is the measurement across the inner width of the ring
You'll need:
  • A ring that fits you
  • Ruler

Step 1:

Find a ring that fits.

Step 2:

Lay the ring on top of a ruler, and measure the widest area inside the ring from the inner edge to the inner edge. Round off to the closest whole millimeter.


If your ring is a different shape than a circle, measure the shortest distance across it.


Measurement Type

Diameter Circumference US UK European
14 MM 44 MM 3 F1/2 44
14.6 MM 46 MM 3.75 H 46
15.3 MM 48 MM 4.5 H1/2 - I1/2 48
16 MM 50 MM 5 J-K 50
16.5 MM 52 MM 6 L - L1/2 52
17.2 MM 54 MM 7 M1/2 - N1/2 54
17.8 MM 56 MM 7.5 O - P 56
18.5 MM 58 MM 8.5 P1/2 - Q1/2 58
19 MM 60 MM 9 R1/2 - S 60
19.8 MM 62 MM 10 T1/2 62
20.4 MM 64 MM 10.5 V 64

Sizing Tips

When choosing a ring size:

Choose the ring size of the largest finger on which you’ll be wearing the ring. When measuring, round off to the closest whole millimeter.

Stackable rings:

For a looser fit, select one size up from your normal ring size.

Wide shank ring:

This ring has a wider band. We recommend one size larger than your normal ring size.