Note: Ring sizing gauges and published charts do not always agree. The information below is the result of careful study and comparison of various sources, consistent with the instruments and measuring technique we use in our workshop.

Ring Size Conversion Chart

★ = Most common sample size (Size 7 for women, Size 10 for men)

Reality Check: Sizing Tips

Rings and gauges are hard metal objects that can be measured exactly, but your finger is flesh and bone. Your finger is not perfectly round and cannot be measured with the same degree of accuracy as the ring. At the end of the day, the right ring is one that will stay on comfortably.

How We Measure: True Diameter Method

At Walker Metalsmiths, we use the True Diameter Method. The mark is read at the point where the wider side of the taper meets the edge of the ring. Wide rings are occasionally tapered and the smaller edge should be taken as the true size since this is the diameter of the largest finger that can fit into it.

Some jewelers use the Center Line Method, where the mark at the center of the ring is judged to be the size. Using this method, a wider ring will be measured at a size slightly smaller than its true diameter due to the taper of the sizing gauge. Because a ring size is a definition of diameter, we believe it is proper that a ring actually measures the true diameter rather than contain a fudge factor for width. Your local jeweler may disagree—calibration of gauges from different manufacturers may also vary.