Ring sizing can be tricky, especially if you are buying for a gift! We created this guide to help but we highly recommend coming down to the Latchkey Loft store if you can and getting sized in person. 

Australia and most of the world does sizing by numbers which is the most accurate but different countries have different sizing methods ie letters.

The most common size for ladies is usually a size 6 or 7. However, if you are unsure of your size you can measure the inner diameter of one of your own rings and refer to the below measurements chart.

Please also note that if you are ordering a wide banded ring or if your size falls between two sizes, order the larger size.


Size 3 = Ring Sizes Inner Diameter measures 14.1mm

Size 4 = Ring Sizes Inner Diameter measures 14.9mm

Size 5 = Ring Sizes Inner Diameter measures 15.7mm

Size 6 = Ring Sizes Inner Diameter measures 16.5mm

Size 7 = Ring Sizes Inner Diameter measures 17.3mm

Size 8 = Ring Sizes Inner Diameter measures 18.2mm

Size 9 = Ring Sizes Inner Diameter measures 18.9mm


If you require a ring in a different size in any of our designs, or if you have any further questions please send us an email at and we will be happy to help.


Laura and Sarah