How to measure your ring size
The size of your fingers varies during the day and depends, among other things, on temperature and humidity. It is therefore best to measure your fingers when they are neither too cold nor hot.
To measure your ring size, use a piece of string or a narrow piece of paper. Use the string or paper to wrap around your finger so that it fits. Where the paper overlaps, a line is drawn and the circumference of the finger can now be easily measured with a ruler. If the circumference of your finger measures 52 mm, your ring size will be size 52.