How to Find Your Perfect Ring Size, From Home!

So, you’ve found your perfect ring, and now all that’s left is the sizing.

Nothing is worse than getting a ring in the mail, just to find out it doesn't fit! This guide will walk you through step-by-step on how to find your perfect ring size for any finger! So you'll never have to worry about getting the wrong size ever again.


  • DIA = Inside Diameter
  • CIRC = Inside Circumference
  • mm = Millimeter
  • If you have a ring that's fit

Simple, just measure the inner diameter of your ring and you may find your ring size with chart below.

  • When two sizes seem to fit

If you are between two sizes, always go with the larger one. Don’t use strings. Strings tend to stretch, which can result in a wrong size.

  • Open rings that can't be modify to closed ring

Most of our open-ring design cannot be modified. Each of the open ring have its unique design and a mold component.

We will not accept any request of changing an open ring into a closed ring.

  • General Sizing 

For our Necklace and Bracelet, we will mention or describe the size details in our product page. Most of our pieces come in a general size that would able to fit most of the people.

Cosibello Ring Size guide


✦ Avoid measuring for a ring when you’re cold, as your fingers will be half a size smaller.

✦ Make sure you can comfortably slide the string or paper over your finger joints/knuckles.

✦ Measure your finger 3 or 4 times to make sure you’re getting a correct reading.

✦ Use a few different pieces of paper or string too - these materials can twist or stretch so it’s best to take a few readings.

✦ Rings with wider bands will fit a bit tighter, so you may need to go up a size.