Size guide

Ring sizing is definitely always a matter of starting over! You never know what size you have!

We have prepared 2 very easy methods to find out your ONEZERO ® size.

Also, by using the American sizing system, we add the equivalent to the most common size in Spain, just in case you know it!

Method 1

You only need a ruler and a ring that works well for measuring the inner diameter. When you have the measurement in centimeters, consult the table below.

How to measure diameter?

Look for the equivalence to the measurement that you found in this table.

Method 2

If you don't have a ring, measure the circumference of your finger.

  • 1. You need a piece of paper,
    a pencil, a ruler and
    scissors.

  • 2. Cut a thin strip of paper.

  • 3. Wrap it around your finger and make a straight line.

  • 4. Take the strip and measure the piece between
    both brands.

How to measure finger circumference?

STEP 2: Find the equivalence of your contour measurement that appeared on the strip of paper and look at your size in this table.

Method 3

If you know your Spanish size, use this equivalence table

For either method, if you are hesitating between two sizes, as these are flexible rings, go with the smaller size.

If you still have questions, you can contact us using the contact form .

And if despite trying to get your size right the rings don't fit you, don't worry, we will exchange them for you for free.*

*Available for Spain and Portugal