Introduction
Online shopping has made it easier than ever to get what you need. We can buy everything, from groceries to expensive rings. That said, finding the right fit can be a little tricky when it comes to rings, and that’s where we come in.
In this article, we've covered everything regarding finger rings, from measuring ring size to the various fits available. So, read on to learn how to get the best-fitting rings.
Quick Summary
- This article covers how to understand, measure, and choose the right ring size for a proper fit.
- Men and women generally wear different ring sizes due to differences in hand structure, with women typically having smaller, more delicate bands and men needing wider and larger fits.
- The average ring size for men is around size 10, which is approximately 19.8 mm in diameter.
- The average ring size for women is around size 6, which is one of the most commonly worn sizes in the U.S.
Why Do You Need to Know Ring Size?
Finger size varies from person to person. So, if you plan to guess the size, then prepare to be disappointed. That's why it's important to know one's ring size before buying. So, we can’t stress enough how important it is to know your ring size when shopping online. Even when buying in-store, having the correct size in advance makes the whole process much quicker and easier.

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Not to mention, different stores and designers tend to have different size charts. So, you will probably find brand specific size chart on their website. They will have a comparison with other standards to help customers understand their one.
What Are the Different Types of Ring Fit?
Jewelers design a variety of ring styles to suit different customers. Each ring has been designed with attention to the inner finger size, shape, and overall comfort. Since everyone’s fingers are unique, some are flatter while others are more rounded, the fit can feel different from person to person.
Here are four of the most popular ring fit types:
Concave Fit
These are made with less metal, which makes them lighter on the finger. The inside of the band is curved inward, making it slightly concave, hence the name. Even though they’re lighter, they’re still quite durable. They’re also a more budget-friendly option compared to other styles.
Standard Fit
Standard fit rings have a classic, timeless design. The inside of the band is flat and straight, giving it a traditional round shape overall. This style is often chosen for wedding bands.
Gallery Fit
Gallery fit rings are similar to standard fit rings since they also have a straight interior. But the interior has hollow indentations. This type of ring is designed to be light and affordable.
Comfort Fit
As the name suggests, comfort fit rings are designed with everyday wear in mind. They use more metal and feature a slightly rounded (convex) interior, which helps the ring slide on and off more smoothly and feel more comfortable on the finger.
How is an Average Ring Size Determined?
People wear rings every day, including promise rings, eternity rings, and wedding rings. These rings become a meaningful part of everyday life. You definitely don't want an uncomfortable piece on your finger every waking moment. Below are tips about average ring sizes for women and men for a better fit.
Average Ring Size for Women
The average ring size for women is 6.
When choosing a ring, first decide which finger it will go on because each finger has different sizing. The accurate size is measured by combining length, size, diet, and exercise.

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Lifestyle plays an important role. It is often better to choose a quarter size larger if your weight changes often.
Average Ring Size for Men
The average mens ring size is ten which is around 19.8 mm. Sizes usually range from 8 to 15, and they can vary depending on the country as well.

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Men's rings come in many styles, so it's important to know what type of ring you prefer before buying.
Men vs. Women Ring Sizes
It is well known that women and men have different ring sizes. And the difference is not just between men and women; it also depends on a person's weight, genetics, and sex. Moreover, a person's ring size can change over time due to weight changes and related factors.

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However, there are some notable differences in the rings between women and men, and we have explained them below.
- Women's rings are smaller, while men's are larger to fit the wearer's frame.
- The rings for women are designed to be delicate and dainty, while men made to appear masculine.
- Women's rings have a narrower band, while men's rings have wider bands to fit their larger hands.
- The top-selling rings for women fall between sizes 6 to 8, while for men it is between 9 and 11.
This article is written exclusively for MeasurementOf.
US Ring Size Chart
Here is the US ring size chart. We have mentioned the diameter in mm of each size, so it's easier for you to measure and convert to other units.
Size | Diameter |
|---|---|
3 | 14.0 mm. |
3½ | 14.4 mm. |
4 | 14.8 mm. |
4½ | 15.2 mm. |
5 | 15.6 mm. |
5½ | 16.0 mm. |
6 | 16.5 mm. |
6½ | 16.9 mm. |
7 | 17.3 mm. |
7½ | 17.7 mm. |
8 | 18.2 mm. |
8½ | 18.6 mm. |
9 | 19.0 mm. |
9½ | 19.4 mm. |
10 | 19.8 mm. |
10½ | 20.2 mm. |
11 | 20.6 mm. |
11½ | 21.0 mm. |
12 | 21.4 mm. |
12½ | 21.8 mm. |
13 | 22.2 mm. |
13½ | 22.6 mm. |
How To Measure Your US Ring Size?
Finding your ring size doesn’t have to be complicated. Think of it like brewing a cup of joe, you just need the right method, and it all comes together smoothly. Here are three easy ways to get an accurate ring size.
1. Measure Ring Size With Thread, Floss, or Tape
You’ll need a simple thread, floss, or a soft measuring tape, and a ruler.
- Start by wrapping the thread or floss around the base of your finger. Don’t pull it too tight, just keep it snug. If you stretch it, you might end up with a larger size than you actually need.
- Mark the point where the ends overlap.
- Now, lay it flat and measure the length in millimeters using a ruler or measuring tape.
- Next, compare your measurement with a ring size chart to find your fit.
2. Use Existing Jewelry
This is one of the easiest methods.
- Grab a ring you already wear that fits perfectly, not too tight, not sliding off when you’re eating chips or washing your hands.
- Download a true-to-size ring chart from a trusted store’s website.
- Print the printable ring size chart, making sure the page scale is set to 100%.
- Place your ring over the circles and match it with the closest size.
Note: If your ring falls between two sizes, always choose the larger one for comfort.
3. Use a Ring Sizer
A ring sizer is a simple and affordable tool you can order online.
- There are two common types: a measuring tape style or a keyring with multiple ring sizes to try on.
- Both are super helpful, not just for you, but also for family or friends who might need to check their size too.
How to Find Out Your Partner’s Engagement Ring Size for a Surprise Proposal?
Imagine this scenario. You are going to propose to your partner. You're carefully planning every detail so nothing ruins the perfect moment for both of you. But you're unsure about the ring size. Getting the wrong-sized ring can be catastrophic. Nothing kills the magic more than the engagement ring slipping away or getting stuck halfway.

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So, instead of planning for the wedding, you might end up stressing over size adjustments. So, don't just guess.
Here are a few simple tips to help you find the right engagement ring size
1. Use Existing Jewelry
The first and easiest option is to use jewelry your partner already owns. Chances are, they already have rings that can give you a solid clue for buying an engagement ring. Just use one of those as a reference for a common ring size. Before you lock anything in, here are a few helpful things to keep in mind.
- Make sure your partner still wears the size ring. Over the years, your partner could gain or lose weight, causing the ring to become tight or loose.
- Find out on which finger your partner wears the "size ring". Fingers on the dominant hand can sometimes be slightly different from the other hand.
2. Ask A Friend or Family for Help
Another smart approach is getting help from someone close to your partner, like a friend or family member. They can casually bring up the topic of rings without raising suspicion. In some cases, they might even be able to ask for the size directly. Just make sure they’re subtle about it.
3. Use a Pen and Line
Taking a ring your partner is currently wearing is a great choice. But you can't just take it and disappear. If it’s something they wear daily, they’ll definitely notice it missing, which could lead to stress or panic.

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Honestly, most people would freak out if their favorite ring or promise ring suddenly went missing. But you could just take the ring and trace it on paper when they aren't wearing it. Then take the tracing to a jeweler. An expert jeweler will be able to correctly identify the size from there.
Don't put too much stress on the measurement. Rings can always be resized later, but this moment is one you only get once.
Tips for Sizing Right
Here are some tips to get the sizing right:
- Always get the rings measured by a reputable jeweler.
- Measure your hands at a normal room temperature since heat can make fingers swell.
- Pay attention to where the ring sits and confirm that detail with the jeweler or store. Some people prefer a tighter fit at the base, while others like a looser center fit.
Which is Better - Guessing Bigger or Smaller for Engagement Rings?
When you’re unsure, it’s always better to go slightly larger when choosing a ring size. A bigger ring can be adjusted down much more easily than trying to make a small ring bigger. Jewelers often suggest sizing up if there’s any chance of weight changes. In many cases, resizing is also free for returning customers.
Conclusion
Rings are a special part of our wardrobe and heart. They can be a gift, a promise, or a goodbye. There are numerous methods for measuring ring sizes. And, even if you get them wrong, you can always resize them.
Frequently Asked Questions
1. Is female and male ring size the same?
No, female and male ring sizes are generally different. The sizing system is the same, but men usually need larger sizes. Women most often wear sizes 6–8, while men commonly range from 9–11.
2. What's size 7 ring size in mm?
A size 7 ring is approximately 17.3 mm in diameter.
3. Is a size 7 ring big for a girl?
No, size 7 is very common for women. In fact, most women’s ring sizes typically range from 6 to 8.
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