Determining your ring size at home

A perfect fit of a ring requires it should feel comfortable, so, not too tight but also not too loose or you’ll lose it easily. Ring sizes are based on finger circumference measurements.


If you already own a ring with the right desirable size, simply measure the width of the inner diameter (in mm), as shown on the Figure below. Then, consulting the Ring Size Chart, look up the inner diameter (binnen diameter) and corresponding EU size (taille Française).

It is important you determine the size for the finger and hand you want to buy the ring for, as finger circumference measurements may differ between fingers and left or right hands.

how to measure a ring size inner diameter

If this doesn’t work for you,


  • Contact us at info@gallery79-jewellery.com if you’re still unsure about the instructions.
  • Drop by Gallery 79 to have it measured. Check here on where and when to visit us.

Ring Size Chart

Ring size measurement table