Here’s a quick and simple guide to measure your ring size:
Measure the diameter of an existing ring you own. Select a ring that fits properly for the intended finger and measure its internal diameter. Lookup its measure in millimetres in the table below to find the corresponding ring size.
Measure your finger. Take a strip of paper and wrap it around your intended finger. Mark it where the paper meets and then measure this distance with a meter. This is the circumference. Compare this to the “Finger Circumference” column in the table below and find its corresponding ring size.
If your measurement falls somewhere in between two ring sizes, always opt for the larger one.