If you already have a ring that fits you, measure the inside diameter and choose the right size from the list.

If you don't have a ring, wrap a string around your fingers and mark the points where they meet. Now you have the circumference of your finger - choose the right size from the list.

For women, the most common size is 8.
For men, the most common size is 9.

(Size one up if you are unsure).

Ringsize Diameter (mm) Circumference (mm)
7 17,5 55
8 18,5 58
9 19,1 60
10 20,1 63