How to find my ring size?

Ordering a ring online can be a bit tricky if you don't know your ring size. But don't despair, we put together a list of different ways to find out your ring size. It's actually very easy to measure it.


The easiest and the most reliable way to find your ring size is to have it measured with the ring sizing tools. If you have a nice jewellery shop nearby, don't hesitate and stop by. Most of the stores selling jewellery will have tools for measuring ring sizes. Just ask to have your ring size measured either by measuring your finger or finding out the size of a ring that you already have. To measure your finger you will be handed a ring sizer made of several “template” rings to try on marked with their size. When choosing the size that fits best, make sure it is easy to put on and take off, not too tight but not as loose that the ring comes off without you trying. Alternatively, if you rather have your ring measured, first make sure this ring fits well on the chosen finger for the new ring. Each finger has a slightly different size. Your ring can then be measured using a ring sizer mandrel. Depending on the shop, you will be provided with UK, US, French or European measurements. We use the European sizing, which corresponds to the inside circumference of the ring. But if the shop gives you a different type of sizing, just refer to our size guide below to convert it to our size. Don't hesitate to contact us if you need any help with finding out the size.

inside circumference
UK sizeUS size
4915.649.0J 1/25
5015.950.0K 1/25.5
5216.652.2M 1/26.25
5517.454.7O 1/27.25
5617.855.9P 1/27.75
5718.257.2Q 1/28.25
5918.859.0R 1/28.75
6019.160.0S 1/29.25
6320.163.1V 1/210.5

While a jeweller or jewellery store shop assistant can give you the most precise measurement, it isn't always convenient to make an appointment with one. Fortunately, there are ways to make the measurement by yourself. There are essentially two methods: either measure the ring that you already have and wear on the chosen finger or measure the size of your finger if this will be your first ring. As mentioned, each of your fingers is slightly different, so make sure you are measuring the right one.


If you already have a ring that fits well on the chosen finger for the new ring then it's really easy.

This is what you will need:

your ring
a strip of paper/tape

Cut out a strip of paper that is approximately 1 cm x 7 cm large and insert it into the ring as pictured here. Make sure that the ring sits in the middle of the strip and that it touches the ring as tightly as possible to get the most accurate measurement.

Mark the point where one end of the paper meets the other. When making the mark, make sure that the strip of paper is stretched to the maxium copying the inside of the ring as closely as possible by pulling the paper outwards as pictured. Then, take it out of the ring and measure the distance between the beginning of the paper and the marked cross point. This length is the inside circumference of the ring that you need. It will range from around 45 mm to 80 mm. All of our rings sizes correspond to the ring's inside circumference, so for example, if your measurement gives 52 mm, your NURA ring size is 52.


When choosing the “template” ring for making the measurement, try selecting a ring that has a similar thickness as the ring that you want to buy to get the most accurate ring size. Please note, that bolder, thick rings might require 1 - 2 sizes bigger size than is the size of a thin, delicate ring. If you are unsure about the size, get in touch with us and we can advise if you need to adjust the sizing based on a picture of the template ring.


When measuring your finger, we advise making a number of measurements at different times of the day to find the best fit. Your size might differ significantly depending on the time of the day, your physical activity, weather and temperature. For example, in the summer, your fingers might be slightly thicker due to swelling of your veins, in cold weather, your fingers will be thinner as the circulation is contracted. We advise to use the biggest size of the respective measuring, so in general, we advice to take the measurements in the evening.

This is what you'll need:

a piece of paper tape or string, pencil, and a ruler
or sewing measuring tape

Wrap a piece of tape, string or the measuring tape around your chosen finger close to the knuckle. This is the thickest part of your finger, and your ring will need to slide over it comfortably. Note the length of the tape required to go around the finger by marking the point where the tape meets, take it off and measure the length to the closest millimeter with a ruler. Our sizing corresponds to the length in mm, so no need to convert anything. If your length is 54 mm, your size is 54.


If you are using the tape measure, you will get the length right away. The circumference or length of 52 mm means size 52 in NURA shop.


The size of a square ring is not that easy to measure. In general, especially if the ring is very thin, just as our Cube rings pictured below we advice to find a round ring that fits well and order one size smaller. So for example, if your normal ring size is 53, you should order size 52 for a square ring.


Do get in touch with us if you are unsure about the sizing or your size is not available. We are happy to help! If you are in between two sizes, take the larger size. :)