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Ring Size Conversion Chart

ring sizing chart

How to Measure Your Ring Size at Home

Option 1: Use a Ring That Already Fits

  1. Pick a ring that feels just right.

  2. Measure the inside diameter in millimeters.

  3. Match your measurement to the chart above.
     

Option 2: Wrap It Like a Tidal Current

  1. Cut a thin strip of paper or string.

  2. Wrap it around the base of your finger — not too loose, not too tight.

  3. Mark where it overlaps.

  4. Measure the length in millimeters (this is your finger circumference).

  5. Find the closest match on our chart.
     

Siren’s Sizing Tips

  • Measure at the end of the day — when your fingers are most relaxed.

  • Hands feel slimmer when cold — let them warm up before measuring.

  • If you’re between sizes, go one up for comfort, especially for wider bands.
     

Still Not Sure? Ask a Siren.

Let us help you find your fit.
Drop me a message - I’ll be happy to guide you:​​​

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