Defining the right size for your Ring:

Measure using an existing Ring:

The easiest way is to measure the diameter of a well fitted ring, to determine the right size of the ring you want to order. Below is an illustration how to do this;

Measure the diameter of a well fitted ring, to determine the right size of the ring you want to order. Measure the diameter in the middle of the ring as illustrated on the picture above. Here an example is shown where the diameter is 18mm. If possible you should use a ring that is approximately as wide as the one you want to order. Wider rings feel tighter on your finger than small rings, for that reason (unless you use a ring of comparable width), you should order wider rings half a size bigger, and for smaller rings half a size smaller.

Measure the circumference of your finger:

Ring sizes are equivalent to finger circumference in millimeters, so you can also use a measure tape (from a sewing box or a tool box) to measure the circumference (on the middle one of the three knuckles on your finger). If you do not have a measure tape on hand you can also use a piece of string and a pen or sticky tape to mark the circumference needed. You can measure your finger circumference and afterwards you put the string against a normal ruler to determine the length in millimeters. This figure is equivalent to the ring size.

Circumference (mm)	Diameter (mm)	Diameter (inches)	Ring size Europa
50	16	1,97	16
52	16,5	2,05	16,5
53	17	2,09	17
55	17,5	2,17	17,5
56	18	2,20	18
58	18,5	2,28	18,5
59	19	2,32	19
61	19,5	2,40	19,5
62	20	2,44	20
64	20,5	2,52	20,5
66	21	2,60	21