Then remove the tape (or string) from you finger. Step 3. Use the ruler to centimeter side of the ruler to measure from the end of the of the tape (or string) to the mark you made with your marker. This number will give you your ring size in centimeters! Step 4. All KOZAKH rings come in USA ring sizes. Ring size often gets confused with ring width. Ring size is the diameter of the ring and is also reflective of a finger size. The ring width refers to the thickness of the band itself. Wedding and engagement band widths range from 1.6 mm all the way up to 20 mm, with most women and men choosing between 1.6 mm and 8 mm. Mark the point where the string or paper overlaps with a pen or marker. Use the metric ruler to measure the length of the string or paper from the starting point to the marked point in millimeters. Using our ring size calculator above select " Inside Circumference (mm) ". You will now see the different ring size conversion - such as USA or Europe. Below is a ring size conversion chart for our international customers: U.S.A. & Canada Size: Ireland, U.K. & Australia Size: German Size: French Size: Japan Size: Spanish, Italian & Swiss Size: Inside Diameter (mm) Inside Circumference (mm) 1: B--1-12.45: 39.1: 1 1/2: C----12.85: 40.4: 2: D: 13 1/4: 41 1/2: 2: 1 1/2: 13.26: 41.7: 2 1/4: D 1/2 If you are choosing a ring wider than 6 mm, think about a slightly bigger size. In narrower rings, the skin can move to one or to the other side of the ring, but in wider rings, it's not so easy, so the skin stays under the metal, sometimes leaving "ring marks" on your finger. Ring sizes correspond to your finger's width in millimetres: Ring size 6 will fit your finger with an inside diameter of 16.51 millimetres, and so on. Some customers ask how to measure ring size in cm, you simply need to divide the millimeter by 10 for the ring size chart conversion. So 4 millimeters is 0.4 cm and vice versa, 0,5 Make sure the finger is at normal temperature, fingers shrink when cold. Measure more than once as finger size can also vary with diet, exercise, etc. from 1/4 to 1/2 size. If your knuckle is larger, ask your designer about a Euro shank. (There are two versions; softly squared to fit over the knuckle, and round with weighted lower corners.) An engagement ring with a band (or shank) of at least 1.6mm-2.0mm provides a stable foundation for a center stone. Shanks thinner than 1.6mm may not hold up in the long-run. That's why we recommend going no smaller than a 1.5mm band. If the band is too thin, it's likely to crack or bend over time. In the United States, the average size for a woman's pinky is a size 4, and corresponds with a size 6 ring finger. Since women come in all shapes and sizes (and we love that!) we offer standard half sizes from 2.5 to 7, and also offer custom sizing as small as a size 1 and as large as a size 13 in quarter, half and full sizes at no extra charge The average Gucci ring size woman is around ring size 17 EU , Size N in UK and Size 6.5 US. A useful list below finding the average women's ring size: 1. Ring Diameter: 17mm / 0,66″ 2. Ring Circumference: 53mm / 2.1″ 3. US/Canada Ring Size: 6.5 4. UK/Australian Ring Size: N 5. French/Russian Ring Size: 54 6. German Ring Size: 17 7. OXdLl.