If you're not sure of your ring size, don't worry - you can easily measure it at home with a few simple supplies. All you need is a piece of string or thin strip of paper, a ruler, and something to mark the string with (a pen or pencil will do).

In this guide, we'll walk you through the steps to do it. So whether you're buying your first ring or need to update your current ring size, follow these instructions, and you'll be good to go!

How to measure your ring size
Circumference Ring Size Chart (Pictured Above)


A numerical scale is used in the United States to determine ring sizes. The circumference of the inside of a band determines these numbers, expressed in millimeters. Ring sizes begin at about a 3 (tiny) and go up to about a 15 (giant). The distance between one full ring size and the next is usually 2-3mm.

A 1mm difference in ring circumference seems small but might make all the difference between a comfortable ring size and one that falls off or hurts you by being too tight. For this reason, you'll come across half sizes (size 5.5), quarter sizes (7.25), and even "loose" and "tight" sizes, which are basically like an ⅛ size increment. So, for example, a "tight 6" is basically a 5 ⅞.



Measuring your ring size with string is a simple and accurate way to do it at home. Here's what you need to do:

1. Cut a piece of string or thin strip of paper that is about 6 inches long.

2. Wrap the string or paper around your finger's base, ensuring it's snug but not too tight.

3. Mark the point on the string or paper where it overlaps, forming a complete circle.

4. Use a ruler to measure the length of the string or paper from the mark to the end.

5. Compare your measurement with the Circumference Ring Size Chart above to find your ring size.

That's it; measuring your ring size with string is that easy!


If you don't have a ring sizer or measuring tape at home, don't worry! You can still figure out your ring size using a piece of paper.

How to create a paper ring sizer:

1. Cut a strip of paper about 1/4 inch wide and 8 inches long.
2. Wrap the paper around the base of your finger. Make sure the paper is snug against your skin but not too tight.
3. Mark the point where the two ends of the paper meet with a pen or pencil.
4. Measure the distance from the end of the paper to the mark with a ruler or a measuring tape.
5. Use the chart above to find your ring size using the measurement from your paper ring sizer.


  1. Take a ring that fits you perfectly.
  2. Place the perfectly sized ring on top of the circles indicated on the ring sizing chart.
  3. If the circle is barely visible after placing your ring on top of it, it is your ring size.
  4. If no size matches up perfectly, your ring size is probably between two sizes.


If you don't have a ring that fits you perfectly or want to make sure you get the right size, you can always use a ring sizer. This ring-size tool is easy to use and only takes a few minutes. Plus, it's a great way to double-check your work if you're unsure of your size.

*Please note that men have wider fingers than women. Therefore they measure their fingers using a wide ring sizer. Women with extra broad digits should also use a wide ring sizer to get the best fit.

  • Simply slip the ring sizer over your finger and adjust it until it fits snugly but not too tightly.
  • Once the ring-size tool is in the correct position, read the number on the sizer to find your ring size.


While ring sizing may seem easy, there are a few tricks to ensure the most precise measurement.

Here are some things to keep in mind when measuring your ring size:

  • Body Temperature can affect your ring size; cold fingers shrink, and hot fingers enlarge; make sure to measure your finger at room temperature for the most accurate reading.

  • Time of day is another factor that can affect the accuracy of your ring size. In the morning, fingers are the smallest. So, avoid measuring at this time since sizing up a ring is much more costly than sizing a ring down. The best time of day to measure your fingers is at night — when they are slightly larger — to ensure a comfortable fit.

  • The wider the band, the more snug it will be on a finger. If you adore a ring on the wide side (5mm and up), go up about a half size for every millimeter after 4mm.

  • When buying a ring, it is important to consider placement. Engagement rings and wedding bands are generally worn on the left ring finger, which is usually smaller than the right ring finger since most people are right-handed. If she's left-handed, the ring finger on her left hand will be somewhat larger than the ring finger on her right hand. Why? The ring finger of the dominant hand is typically 1/2 a size larger than the non-dominant hand. This is crucial because most women are unaware of their left-hand ring finger size, but many are aware of their right-hand ring finger size. 

  • Measure your ring size more than once. Before deciding on the final ring size, we encourage you to measure at least 3-4 times using the ring size measurement chart. Record your ring measurement, repeat the process and compare measurements to find the most accurate ring size.



There are a few reasons why your ring size may keep changing. First, if you are pregnant, your fingers may swell due to the increased blood flow in your body. If you have recently gained or lost weight, your fingers may also change size. If you have arthritis or other conditions that cause swelling in the joints, this can also affect your finger size.


It's a common question we get asked: are ring sizes unisex? The answer is yes. And no. Confused? Let us explain. Yes, ring sizes are unisex because there is no real difference between men's and women's ring sizes. The sizing system is the same for both genders. However, men's fingers tend to be wider than women's, so a man who wears a size 7 ring would need a size 8; men's and women's ring sizes use the same measuring system. Still, because men's fingers are generally wider, you'll usually need to go up one ring size when purchasing a woman's ring.


The average ring size for a woman in the United States is between 6.5 and size 7. The average ring size for a woman varies depending on several factors, such as age. Older women generally tend to have larger ring sizes than younger women. Another factor is geological locations; a woman living in a colder climate usually has a smaller ring size than a woman living in a warmer climate.


Yes, if you remeasure your finger and find that you need a larger size than you commonly wear, there is no need to worry.

Yes, a ring can usually be sized up by a professional jeweler. However, depending on the type of ring and the amount of size needed, it may not be possible to size up a ring without affecting its overall appearance.

A ring is sized up by adding material to the band, which can be done by either stretching the metal or soldering on additional pieces of metal. Stretching the metal is the most common method and is usually successful for adding a ring size or two. However, soldering on additional pieces of metal is often necessary when a ring needs sizing up more than two sizes. This method generally works well for increasing the size of a ring by up to four sizes.

However, certain rings are harder to size up. For example, a stone-set ring with prong settings may need to have the entire setting recreated if it needs sizing up. Or, a ring with an intricate design may also be difficult to size up without affecting the overall pattern. If unsure whether your ring can be sized up, it's always best to consult a professional jeweler before having any work done.


Measuring your ring size at home is a simple and easy process. Just make sure to measure your finger a few times to get an accurate reading. And if you're unsure of your ring size, always err on the side of caution and go with the larger size. After all, it's much easier (and cheaper) to resize a ring that's too big than it is to resize one that's too small.

We hope you found this ring size guide helpful. If you have any questions, don't hesitate to reach out to us. Thanks for reading!