
Don’t you know the size of your ring? Sometimes, it is difficult to get it right and know which jewel will look best in your hands, especially if you do not know what is the right size for you or if you are not physically in the store to be able to try it on and know if it really fits. There are also other situations such as, for example, if you are going to buy a ring that will not be for you, but will be to give it to someone very special. In these cases, it is best to go to a trusted jewelry store, such as Jorge Juan Joyeros, where you will get totally personalized attention to find the ideal ring for you or for the person you want to give it to. Undoubtedly, for these situations, it is very important to know what the finger or ring size is, as it would happen with any other accessory or garment. Therefore, at oneHOWTO we want to explain how to know the size of your ring. Read on and find out the different methods to find the perfect ring for you.
Know your ring size with another ring
This is one of the best methods to discover your perfect size. If you have the chance to have a ring that fits you perfectly, that is, neither tight nor loose, you can use it to get the ideal size for your new ring. The same applies if the ring is not for you, but you are looking for a special gift or the perfect engagement ring and you have the chance to get one of the rings that go well for that person. Thus, this is one of the most reliable ways when it comes to knowing the size of the contour of the finger: yes circumferences fit when placed together, there is no doubt, that is your size.
Another method to know the size of your ring, so that you can tell someone or include it in the search you do in an online store, is to use another ring, but since you cannot compare it live with the one you are going to receive, you will measuring the inside diameter of the ring that you already have and you’re doing great. Follow these steps:
- Place the ring on a ruler or tape measure.
- Measure the inside diameter, that is, from side to side of the inner face of the ring, the space in which your finger will go. Remember to always focus on millimeters. Remember: 1 centimeter equals 10 millimeters. This ratio will help you convert quickly.
- Check your size in the table in the following images, where you can see the different equivalences.


Know your ring size without another ring
When you do not have another ring at hand is when it can be difficult to discover what is your ring size. However, you can use the following method to find out. Follow these steps:
- Roll around the finger a thread or a tape measure squish directly, as if it were a ring, and adjust it comfortably so that it is neither too tight nor too loose.
- Mark the point where the ends meet and the circumference closes.
- Next, measure the piece of fabric or thread with a ruler or tape measure.
- Focus on millimeters: 1 centimeter equals 10 millimeters. Example: 5.2 cm would be 52 mm.
- Once you have the measurement, you must calculate finger diameter. To do this, use the following formula: Measurement in millimeters / 3.14. Example: 52 mm / 3.14 = 16.5.
- Once you have the result, you can find out what your size is in the ring size chart from the image below.
In case the measurement is not exact with the indicated table, we recommend that you always round upwards, thus avoiding that the ring is too tight and tightens you.

Take the ring to a jeweler
Apart from the above methods, you can always take your ring to a professional jeweler to be completely safe. It will tell you what the exact size of your ring is thanks to the use of a measuring stick. In case you do not have a reference ring that you can take for the test, they also have ring-shaped finger gauges that will facilitate the verification.
Achieving the size of your ring can be very simple if you spend a few minutes or if you contact your trusted jeweler. Do you dare to find out your size to get it right the first time with your new ring? Test it!
Now what already have you discovered your ring size, you may have doubts about what type of ring to choose. For this reason, we encourage you to continue inquiring into oneHOWTO to learn about the different elements and materials of these beautiful finger accessories. For example, here you can read about the different types of diamond cuts and how many types of gold there are.
If you want to read more articles similar to How to know my ring size, we recommend that you enter our Fashion and Style category.