Ring Sizer

If you don't know your ring size!

Measure the inside diameter of a ring that fits your finger, and use
this calculator to convert the diameter into an approximate UK ring size.

Enter the inside ring diameter in mm below (between 11.9 and 25.0) and then click calculate.

We have made every effort to ensure that the above data is correct.
Use our 'Contact Us' link to request a Free Ring Sizer, or
click on the icon below.