Getting the right size ring can be a challenge. You don't want to order something that doesn't fit. There are several different ways to do this. One of the easiest ways is using a ring size guide. Depending on your computer and settings, it may or may not be the most accurate measurement of your ring size.
The best way to find out your ring size is to visit a jeweler or use a ring size chart. These tools are free and should be able to help you determine your size. While a