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How to find your ring size (with conversion chart)

· 1 min read · Buying guides

Graduated mandrel with a ring

Measuring your finger properly prevents a ring from being loose or tight. You can do it at home with a string and a ruler.

Method 1: with a ring that already fits #

Measure the inside diameter of the ring (in millimeters) with a ruler and look up the size in the chart.

Method 2: with string or a paper strip #

  1. Wrap a string or paper strip around the base of the finger.
  2. Mark where the ends overlap.
  3. Measure the length in millimeters: that is the circumference.
  4. Look up the size in the chart.

Tips #

  • Measure in the late afternoon, when your finger is most swollen.
  • Do not measure with cold hands.
  • If your knuckle is much bigger than the base of your finger, choose an in-between size.
  • A wide band needs a slightly larger size.
  • Measure several times and take the average.

Conversion chart #

Circumference (mm) Inside diameter (mm) EU size US size
49 15.6 49 5
52 16.5 52 6
54 17.3 54 7
57 18.2 57 8
59 19.0 59 9
62 19.8 62 10

Sizes vary between countries and makers: if in doubt, have yourself measured at a jewelry store.

See also #

This entry was drafted with the help of AI and is pending review by the author.