Your ring size can be found in one of the following ways
Measure the inner diameter of a ring you own in millimeters and search for your result in the diameter column in the table below. Your ring size will appear in the same row as the resulted diameter.
Use a piece of paper and wrap it tightly around your finger.
The length of the paper is your fingers circumference.
Search for your result below in the circumference column to find
your ring size.