See the below image for the Uk ring size diagram. Using a tape measure, find out your ring size (in mm) by measuring the circumference around the third finger on your left hand. Then, use the above UK ring size chart to find the corresponding letter. Printable Ring Size Chart How to Measure UK Ring Size at Home
International Ring Size Chart American British European Inside Diameter (mm) A 12.065 38 12.096 A½ 12.263 1 12.344 100 more rows …
What’s the average ring sizes for men and women? For ring sizes in the UK, the average ring size for women is an O and the average ring size for men is a T.5. It’s good to keep in mind that everyone’s different and one size doesn’t fit all, so make sure to use our handy chart or visit your nearest Beaverbrooks for an accurate size.