To determine your ring size, follow these steps:
Take a piece of string or a thin strip of paper and wrap it around your finger.
Make sure the string or paper is snug but not too tight.
Mark where the string or paper overlaps with a pen or marker.
Then, lay the string or paper flat and measure the length in millimeters from the end to the mark to find the circumference of your finger.
All ring sizes correspond to the circumference you just measured.