Buying a ring may seem like a simple thing, but when we don’t know the finger sizeFinding the perfect ring size can be a challenge. If you don’t get the size right, you risk the ring being too tight or too loose, which can ruin the surprise or simply make it uncomfortable to wear. To avoid problems, there are several methods for accurately measuring your finger size, whether using household tools or consulting a professional. Here we show you the most useful methods and provide a size chart so you can find your exact size before buying a ring.
Method 1: Measure your finger with a strip of paper
One of the easiest and most accessible methods for measuring ring size is by using a strip of paper. This method is ideal if you are at home and do not have a reference ring on hand. To do this, follow these steps:
- Cut a strip of paper approximately 2 cm wide.
- Wrap the paper around the finger you plan to wear the ring on, loosely, so that it fits comfortably.
- Make a mark where the paper completes the circumference of the finger.
- Now, use a ruler to measure the length of the paper strip to the mark.
- Using this measurement in centimeters, check your ring size in the conversion table.
This method is quite accurate, but it is advisable to take the measurement a couple of times to avoid errors. Remember that the finger can vary in size depending on the time of day and the temperature.
Method 2: Measure an existing ring
Another quick and effective option is to measure the inner diameter of a ring you already own that fits well on the finger you plan to wear the new ring on. This method takes out a lot of the guesswork, since if the ring you already own fits comfortably, simply measuring it will be enough to get the correct size. For this method, follow these steps:
- Place the ring on a ruler or tape measure.
- Measure the inner diameter of the ring in millimeters, that is, not including the edge of the ring.
- Use the conversion table to find out which size corresponds to that diameter.
For example, a diameter of 18 mm corresponds to a size 8 ½ in the US, while it corresponds to a size 18 in the Spanish system. This method is especially useful when you already own a ring that fits you well and you want to make sure you buy one in the same size.
Method 3: Using a professional ring sizer
If you prefer to avoid any errors or variables, the best option is to visit a jeweler. Jewelers have ring sizers, which are calibrated instruments used to measure both the diameter of a ring and the thickness of the finger. This method ensures that the size will be accurate and, in some cases, can be ideal for special situations such as purchasing engagement rings or for weddings, where it’s crucial to ensure the size is exact. The ring sizer works by inserting the ring or finger into a cone with different sizes engraved on it. If the ring falls between two sizes, it’s recommended to choose the larger one to avoid it being too tight.
What you should keep in mind when measuring your size
Finger size varies throughout the day due to factors such as temperature or fluid retention. It is advisable to measure your finger at the end of the day, when fingers are usually more dilated. Also, make sure the ring fits comfortable, tight enough not to fall off, but with room to slide over the knuckle without difficulty.
- Comfort: The ring should move slightly, but should not fall off easily.
- Selected finger: Remember that every finger is sized differently, so choose which finger you are going to measure with confidence. Also consider whether the ring will be worn on the left or right hand, as there are sometimes slight differences in size between the two hands.
- Adjustment factor: If your ring is between two sizes, always choose the larger size, especially if it is a ring you will wear every day.
Ring size equivalence tables
Below is a table of ring size equivalents. These measurements are usually expressed in millimeters of circumference, but you can also find sizes in numerical formats depending on the country:
| Circumference (cm) | Size usa | Size Spain |
|---|---|---|
| 4.6 | 3 ¾ | 4 |
| 4.7 | 4 | 6 |
| 4.8 | 4 ½ | 8 |
| 5.0 | 5 | 10 |
| 5.2 | 6 | 12 |
| 5.4 | 7 | 14 |
| 5.8 | 8 ½ | 18 |
| 6.4 | 11 | 22 |
| 6.8 | 12 | 24 |
Please note that these conversions may vary from one country to another, so check the corresponding conversion. For engagement rings and special rings, it is advisable to have an exact measurement so that the ring is as comfortable as possible.
What to do if the ring doesn’t fit?
In case the ring does not fit perfectly, do not worry as many jewelers offer adjustment services. If the ring is of plata, for example, adjustments typically cost between $10 and $20. However, in engagement rings, goldPrices may be higher. Be sure to compare prices before deciding on a fit. Finally, if you follow all the methods we’ve described, measuring your ring size shouldn’t be complicated. By following these recommendations, you’ll avoid returns and enjoy a perfectly fitting ring, making your purchase a satisfying experience.