How to choose the right ring size?

Choosing the right ring size is important to ensure that the ring fits comfortably and is pleasant to wear every day. The ring should be tight enough to stay in place, but loose enough to be easily removed from the finger. Finger size can vary depending on the time of day, temperature, and other factors, so it is important to measure carefully.

Measuring ring size from your finger

There are various measuring tools available for measuring ring and finger size, but you can also measure them yourself at home. Below, we present three ways to measure your finger size, with a particular recommendation to use a ring sizer for the best accuracy.

1. Using a ring sizer

When measuring the diameter of your finger, it is best to use a measuring tool that corresponds to the width of the ring. You can use a string or a piece of paper cut to size, or order a free ring sizer from our online store. However, remember that the ring must fit over the knuckle. One practical way to measure the thickness of your finger with a traditional measuring tape is to measure the thickest part of your finger. 

1. Thread one end of the ring sizer through the loop at the other end and pull.
2. Place the ring sizer on your finger and tighten it so that it is snug but comfortable.
3. Adjust the ring sizer so that it just fits over your knuckles. Remember that the ring should go over your knuckles.
4. Once you have adjusted the ring sizer, read the ring size from the scale on the ring sizer. The measurement scale is in US sizes.
5. See the corresponding size in the table on our website.

2. Measuring the thickest part of your finger (diameter)

If you already have a ring that fits, you can measure its inner diameter with a ruler or a more accurate measuring tool. Place the ring on a flat surface and measure its inner diameter in millimeters. Keep in mind that wide rings may require a slightly larger size than thin rings. Rings that are curved on the inside often fit better, so a smaller size may be sufficient.

. Using string or paper to measure (circumference)

You can also measure the circumference of your finger using string or a strip of paper. Gently wrap the string or paper around the thickest part of your finger (usually at the joint) and mark the point where the string or paper meets itself. Measure the marked section with a ruler in millimeters. This measurement corresponds to the circumference of your ring. Please note that this method may be slightly less accurate, so it is advisable to repeat the measurement a few times.

Tips for measuring

• Measure your finger several times at different times of the day. Fingers can swell during the day, so measuring both in the morning and in the evening will give you a more accurate result.
• Avoid measuring with cold hands. Cold can cause your fingers to shrink, resulting in an undersized ring.
• Consider the width of the ring. Wider rings may require a larger size for comfort.

Size chart

*The circumference of the rings (⌀ mm) is measured according to the ISO8653:2016 measurement scale

Changing the size of a ring

We always recommend taking accurate measurements before ordering a ring to avoid unnecessary returns. However, if the ring is not the right size, you have a 14-day right of return in accordance with the Consumer Protection Act. You can change the size of the ring as follows:

1. Log in to your customer account at account.ninja.fi and start the return process.
2. Place a new order for the size you want in our online store. This will ensure that you receive the correct size as quickly as possible.
3. Send the original ring back according to our instructions.

You can find more information about customer returns here.

By choosing the measurement method that suits you best and following our tips, you can be sure that your new ring will fit perfectly. If necessary, our customer service will be happy to help you with any questions you may have about ring sizes.