Fortuna Onyx Set

1. Measure your finger

All you need for this method is a pen, a stripe of paper and a ruler. Simply cut out a 10cm long, narrow strip of paper and wrap it lengthways around the finger you would like to wear the ring on. Then mark the end of the overlap with a pen and measure the marked distance with the ruler. The result in millimeters then corresponds to your ring size. For example, a distance of 5,4 cm corresponds to a ring size 54.

2. Measure an existing ring

Another easy way to make sure you get what you’re looking for is to find an existing ring and measure the inner diameter or inner circumference. Multiply the value by 3.14, the result corresponds to the ring size. You can also take a look at our handy international converter if you know your size in another region.
Handy tip: If your existing ring is in between two sizes, we suggest sizing up!

Need a little advice to help you find the right ring size?

We created a ring sizer for you to make it as easy and fast as possible to find the size you need. You can find the sizer here: download the sizer

All you need to do is to print it, cut it out and measure the finger you wish to wear the ring on.
Please note that the size might vary during the day since the width of the fingers is often slightly bigger in the evening than in the morning. Therefore, it might be a good idea to measure twice.
In case that you do not have a printer at home or you are secretly trying to find the right size for a loved one without telling them, we have two methods that can help you with that: