How To Guess Ring Size When You Don’t Have Finger Circumference Measurement

If you’re buying a gift for your favourite teenager, you probably don’t know what their ring size is. So you have two options – you can buy a ring with a gap (we have a few cool options), or you can use the below table to make an educated guess. Remember, any ring is likely to fit one of her fingers and if you’re really unsure, go a size up because thumb rings are still really cool. 

Teenager ring size sorted by age in UK and USA sizes

How To Measure Ring Size At Home

To determine the correct ring size:

  1. Cut a piece of string and gently wrap it around their finger, ensuring it’s not too tight.
  2. Mark or cut the string at the point where it meets, indicating the exact measurement.
  3. Use a millimetre ruler to measure the length of the string.
  4. This measurement represents the inside circumference of the ring.
  5. Use the below conversion chart to determine her ring size based on the measured length in millimetres.

Ring Size Table

Use this table to match the circumference of your finger to the size of the ring you’d like to buy. 

Ring Size For USA and UK measurements

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