There are two ways to measure your ring size to ensure the right fit.

Measure a ring of your own

1. Find a ring of your own that fits the desired finger.
2. Measure the inner diameter of the ring (in mm).
3. Match the size of the diameter to the chart below. 

Measure the diameter of your finger 

1. Take a piece of tape or string and wrap it around your desired finger.
2. Cut the tape/string at the point of intersection.
3. Measure in mm and match the size of the diameter to the chart below. 

Please note the above number is for measuring the diameter of a ring and the below number if for measuring the diameter of a finger.