To get the most accurate ring size:

• Measure finger in warm temperatures at the end of the day.
• If knuckle is a lot larger than the base of finger, measure both the base of finger and knuckle and select a size in between the two.

Other tips and information:

• If purchasing a wide band, move up a size from measurement, for comfort's sake.
• All sizes listed are standard American sizes.
• The average woman's ring size is about 6. The average man's ring size is about 10.
• Ring size will typically be about half a size larger on primary hand (i.e., the hand you write with).

Measurement guide:

The below guide shows the inside diameter measurement in millimeters for each of the ring's sizes. If your measurement is between sizes, order the larger size.