At Catastrophy, we use US ring sizes as our main measurement. Since sizing standards vary around the world, those conversions can sometimes be a bit tricky. To make sure you’re wearing the perfect fit, we recommend double-checking the diameter and circumference measurements we provide.

A quick tip: the band width can also influence how your ring feels:

• Thinner Bands: These tend to feel a little looser. For example, a size 5 in a thin band might feel a bit more relaxed on your finger. 

• Wider Bands: The wider the band, the tighter the fit will feel, even though the ring itself may measure at the same inner diameter. We recommend selecting a size larger than your normal ring size to ensure a comfortable fit.

• Open Bands: Open bands offer a versatile fit, allowing them to comfortably accommodate your finger size. Since the band is not closed, it easily adjusts over larger knuckles. We recommend choosing your regular size as the open design can naturally conform to your finger.

For the best fit, consider both the size and the band style.
After all, it’s all about finding the purrfect ring for you!

Ring sizes between countries don't always align exactly, so the conversion figures provided below are approximate. For the most accurate fit, we recommend visiting a nearby jeweller to have your finger professionally measured.