Rig Size Converter

Greek size	Diam. mm.	British	Usa

How to determine your ring size

Wrap a piece of string or a strip of paper around your finger.
Mark the point where the two ends meet.
Measure the string or paper against a ruler to get the circumference of your finger.
Divide that by 3.14 to get the diameter of your finger.
Look up your ring size using the form above.

Method 2

Print the Ring Sizer pdf and follow the instructions.