Determine ring size using string or ribbon

If you don't have a ring that fits your finger, use a piece of string or ribbon. Simply wrap it around your finger and mark the point where the ends overlap. Cut the string or ribbon at this point to measure the circumference, which is also your ring size. Make sure the string is long enough to fit over your knuckle.

Measure ring size using your own ring and a ruler.

To determine your ring size, you'll need a ring that fits you well and a ruler. Place the ring on the ruler and measure the inner diameter of the ring in millimeters. Then, multiply this measurement by 3.14 to find your ring size. For example, if the inner diameter of your ring is 17.5 mm, you multiply that by 3.14 to get an inner circumference of 55 mm. This also means that your ring size is 55. That's all you need to do to measure your ring size. I hope you have fun choosing your ring!

If that's too complicated for you, you can simply tell me the inner diameter and I'll calculate it for you.