Download our ring size conversion chart

Download our ring size conversion chart

2 minute read

The international ring size conversion chart is an essential tool when buying rings online. Despite our interconnected world, different countries still use different ring sizing systems. You can use our chart to convert between internal diameter, internal circumference and the two most common ring size systems.

Black and gold ring | Rebecca Cordingley Jewellery

We happily take orders for our rings in both the Australian/UK (alphabet) and American/Canadian (numerical) sizing systems but you might still be interested in how the international systems work.

Have you measured the internal diameter of a ring and now you want to find your ring size? Or would you like to convert an American numerical size to Australian or British alphabet size?

Both are straightforward to do with our chart.

How do you measure ring size

If you don't already know how, you can read our guide to find out what ring size you are. Once you have your ring size measurement, you might need to convert it to another system.

International ring size chart | Rebecca Cordingley Jewellery

Internal measurements

If you know the internal diameter or internal circumference of your ring in millimetres, you just need to find the size that's closest to your measurement.

If your size falls between two sizes on our chart, we recommend choosing the larger size rather than the smaller one, unless it is much closer to the smaller size. Our fingers change size throughout the day and in different weather conditions and a tight ring can be very uncomfortable.

Converting ring sizes

If you already know your ring size in one sizing system and want to convert it to the other, you simply need to find your size and scroll across.

Click here to download and print out our

Please feel free to contact us if you have any questions about how to measure your ring size.

Set of Silver Stacking Rings

Set of Silver Stacking Rings


This set of sterling silver stacking rings has five thin rings. Mix and match with others from our collection of stackable rings or wear the complete set together. The thin stacker rings are each approximately 1.5mm wide and the set of… read more

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