Ring Size Circumference (mm) US Ring Size AU Ring Size
X-Small 49 5 J 1/2
Small 52 6 M
Medium 55 7 O
Large 57 8 Q
X-Large 59 9 R 1/2

Determine Ring Size:

  • Wrap string or paper around the base of your finger.
  • Mark the point where the ends meet with a pen.
  • Measure the string or paper with a ruler (mm).
  • Pick the closest measurement on chart to find your size.