Ring Sizing Help
Gather a piece of string or floss, and a ruler or measuring tape.
Wrap the string snugly once around the base of the finger you are looking to get a ring for. Leave a little bit of slack if you prefer a loose fit. Mark the string where it comes together.
Measure the entire length of the string to the mark you made.
49.3mm - Size 5
51.8mm - Size 6
54.4mm - Size 7
56.9mm - Size 8
59.5mm - Size 9
62.1mm - Size 10
If you are in-between two sizes, consider your knuckle and size up or down accordingly. Consider measuring twice to be safe.