Determining Your Ring Size

1. Fingers are not perfectly round, although most rings are.
2. The difference in size between finger joints and the place where a ring is to sit also affects the choice of ring size.
3. Fingers change size in response to body chemistry and temperature, sometimes by several ring sizes.

For all of these thee reasons, and even more, the best determination of ring size will be obtained by going to a jeweler for a fitting. The size that is chosen is also affected by the specific ring. Wider rings and those in which a stone and setting projects toward the finger will require larger sizes than thinner rings, even for the same finger.

With that in mind, here is a method to help you determine your approximate ring size and a table showing the conversions between sizing used in several countries. If you look at sizing tables in publications or other web sites, you will notice that they may differ from each other by as much as a half ring size. This is not because the authors made math errors, but because there are multiple ways to evaluate ring sizes and they give different results. One last note before we begin: Ring sizes in the US and Canada are also available in quarter sizes (e.g., 6-3/4, 8-1/2), so don't be afraid to ask a jeweler for these sizes if a half-size ring is almost, but not quite right.

Determining Your Ring Size