Convert ring sizes between american, british, australian, canadian, chinese, japanese and in inches and millimeters (mm) for diameter and circumference.
For your information, circumference of a ring is the measure of the length around the circle. The diameter of a ring is the measure of the distance across the middle inside.
Please note that there is no real international standard for ring sizing. You may need to contact to the manufacturer for exact sizes.
For other types of size conversions, please go back to Size Converter .