What is my ring size?
Before you start shopping for jewellery, make sure you know what size ring you need so that you can achieve a perfect fit every time.
Your ring size can be determined by placing a ring that fits you on a professional ring size mandrel, using a professional ring sizer, or finding an approximate fit with a ring size chart or finger size strip.
How to measure your own ring size
If you don’t have access to a professional ring sizer, you can find an approximate measure for your finger with a strip of thick cardboard.
- Cut a piece of thick cardboard or plastic and wrap it around your finger.
(Do not use a piece of string as this will bend to the shape of your finger.)
- Mark the exact spot where the ends join.
- With a ruler, measure the length of this piece of cardboard.
- Find this measurement on the below chart, which will tell you the corresponding ring size.
A couple of notes:
- After you have measured the length then tape it together and put it on your finger just like a real ring. Make it tight but be sure not to push or squeeze it because you won’t be able to do that with a real ring. Make sure it fits over the knuckle.
- If you have used a thin piece of wire and your new ring is a wide band you must add some size to allow for this. The reverse may also be true. If you use a wide piece of cardboard but the ring is going to be thin then take a quarter size off.
- Remember to measure your finger at room temperature as well as both the heat and cold as these can cause your fingers to swell or constrict.
Ring Size Chart
|Inside diameter (mm)||Inside diameter (inches)||Inside circumference (mm)||Inside circumference (inches)||US ring size||British & Australian ring size|
|15.3||0.602||48||1.890||4 ½||H ½|
|16.1||0.634||50.6||1.991||5 ½||K ½|
|17.7||0.698||55.7||2.192||7 ½||O ½|
|18.5||0.730||58.2||2.292||8 ½||Q ½|
|19.4||0.762||60.8||2.393||9 ½||S ½|
|20.2||0.794||63.3||2.493||10 ½||U ½|
|21||0.826||65.9||2.594||11 ½||W ½|