Tip: take a string to measure the circumference of your finger or measure the diameter (of the inside!) of another ring.

With wider rings, we recommend that you take a size larger if in doubt.

inside circumference (in mm) inside diameter (in mm)
Size 6 52.2 16.5
Size 7 54.3 17.3
Size 8 57.2 18.1
Size 9 59.7 18.9