Here is a clear and helpful chart for ring sizes along with a simple guide on how to measure your ring size at home. You can use this in print or digital format for customers or for internal sizing references.

Ring Size Chart (International Conversion)
US/Canada UK/AU India Diameter (mm) Circumference (mm)
4H½714.846.5
5J½915.749.3
6L½1216.551.9
7N½1417.354.4
8P½1618.157.0
9R½1819.059.5
10T½2019.862.1
11V½2220.664.6
12X½2421.467.2

📐 How to Measure Your Ring Size at Home

Option 1: Measure Using a String or Paper Strip

  • Cut a thin strip of paper or string.
  • Wrap it around the base of your finger (not too tight).
  • Mark the point where the paper overlaps.
  • Measure the length with a ruler (in mm) – this is your finger's circumference.
  • Match it to the circumference column in the chart above.

Option 2: Measure an Existing Ring

  • Take a ring that fits you well.
  • Measure the inside diameter in mm using a ruler.
  • Compare to the above.


📝 Tips for Accurate Sizing

  • Measure at the end of the day when fingers are largest.
  • Avoid measuring cold fingers (they shrink).
  • If between sizes, choose the larger one for comfort.
  • For wide bands, go half a size up.