Interactive Ring Size Conversions

Convert your ring size to the ring size used in other countries with a simple drop down list. Pick the country of the ring size that you know and then select the size you have. The other listings will be updated automatically to show you all of the comperable sizes.

From here you can convert US and Canadian ring sizes to British (UK), Chinese, French, German, Japanese and Swiss ring sizes.

USA sizeDiam. inch.Diam. mmCircum. mm
BritishChineseFrenchGermanJapaneseSwiss

Select a ring size in one category, the rest will change to match.

How to determine your ring size

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

A common question we get asked by our international customers is how to convert between the various ring sizes. While this is by no means a complete list, it does list our most commonly asked ring sizes and the conversion from American / Canadian to United Kingdom ring sizes.