The best way to get your ring size is to go to a jeweler.
Another way to get your ring size is to use the ring size chart below. It is to be used with an existing ring in order to get your ring size.
For better accuracy use a ring with a similar bandwidth and style to that you want to buy.
1. Print this document out to 100%. Ensure that the page scaling is set to none on the print dialog box.
2. Place the ring on the chart below and match inside edge of the ring to the circle nearest in size.
3. The letter that fits best within the circle is your ring size. If the ring falls somewhere between two sizes, opt for the larger size.