Step 1 Find a ring at your disposal with the perfect sizing
Step 2 Measure the internal diameter of the ring (mm)
Step 3 Refer to the chart below to find out your size
2) MEASURE YOUR FINGER
Step 1
Wrap it around your finger and tighten the wrap until you can't anymore
Step 2
Use a pen to mark the spot where the string or paper overlaps.
Step 3
Measure the length with a ruler (mm). Use the chart below to find out your ring size.