Here are some simple guidelines to ensure that you correctly size your finger for a ring.
Firstly, choose which finger it is that you would like to wear the ring on and measure your size a few times to ensure you are getting a correct measurement. Do not use stretchy materials such as paper or string to measure.
Fingers swell at different times of the day and in different temperatures. It is for this reason that it is advised to measure your size at the end of the day when your fingers are warm and slightly swollen.
If your knuckle is much larger than your finger’s base, it is a good idea to take two separate measurements and choose a size in between. This is to ensure that the ring fits over the knuckle, but isn't too loose.
Australia uses an alphabetic sizing system. Use this table to help you choose the correct sizing.