How To Measure Ring Size (Top 3 Methods!)

Tired of purchasing rings that turn out to be the wrong size? It can be frustrating to buy a ring online, only to realize when you receive it that it’s the wrong size! Don’t worry — we’re here to help.

When shopping for rings online, it is crucial that you know your ring size before you buy anything. There is nothing worse than being so excited to wear a ring and guessing your ring size only to have it be so loose it falls right off or so tight you can’t even get it on!! That’s why we’ve searched the web and gathered the top 3 methods for how to measure ring size! If you’re not sure how to determine ring size, how to measure ring size in inches, how to figure out ring size in CM or the average ring size for women, keep reading!

In this Complete Guide: How To Measure Ring Size, you will learn absolutely everything you need to know about finding the right US ring size and how to find your ring size, no matter whether you measured in inches, centimeters or millimeters. This complete guide has a women’s ring size chart and a CM to ring size converter to help you find your ring size! For everything you need to know about how to measure ring size, keep reading!!!

What Is My Ring Size?!

It’s definitely frustrating not knowing your ring size, no doubt. Whether you have a lot of rings, have 0 and are looking to buy one or you want to determine ring size for someone else, it is always good to get a little refresher. If it’s been a while since you last measured your finger, take a minute to re-measure. Though you can head down to your local jeweler to determine your ring size, there is no need to do this when you can easily measure your finger and get your ring size at home.

If you’ve already purchased a ring and it turned out to be the wrong size, most places allow you to resize, so it shouldn’t be a problem. If you’ve purchased a ring from us and it was the wrong size — don’t worry! The great thing about our wrap around rings is that they are already adjustable! However, if it is still too small or too large, contact us and we’ll work with you to get you what you need.

To determine your ring size, the best place to start is with the rule of averages and the average ring size for women.

Average Ring Size For Women

For most women, the average ring size for women is between a ring size 5 and a ring size 7. Additionally, the average size woman in the United States is about 5 feet 4 inches tall. Thus, you can use these averages to determine someone else’s ring size if you’re buying a ring in secret! You can go off of these averages to determine a ring size without her knowing.

For instance, if she is a little shorter than the average US height for women and weighs a little more, you can go up a ring size or two. If she’s a little taller and a little thinner, you can go down a ring size or two.

While using the averages isn’t the best way to determine ring size, it can work. However, not every woman fits within these averages, and so this rule really might not help you figure out her ring size. Furthermore, some women prefer a tighter-fitting ring, while others prefer it a little looser. In addition, it is a good idea to keep in mind that the dominant hand on any person might be a little larger. So, for instance, if she’s right handed, but you are looking for an engagement ring size to go on her left hand, she might be a half size smaller on her left hand than she would be on her right.

If you’d rather not guesstimate her ring size, there are plenty of other methods you can do to determine her ring size. Unfortunately, the following methods might spoil the surprise, but at the very least you’ll know you’re getting the right size!!  

Method 1: Measure a ring you currently own

Not sure how to measure ring size?

Try out a ring you already own!!

This method takes the diameter of a ring you already own. (Not sure of the difference between diameter and circumference? Read below!) If you’re looking for the ring size for your girlfriend, fiancée or wife, this method is the best option. Find one of her rings that you know she wears and measure the diameter when she’s not looking!!

If you need a CM to ring size converter, check out our ring size guide and converter below!

Method 2: Measure your finger with paper & ruler

The paper & ruler test is by far one of the most commonly used tests to determine ring sizes for women. If you use this paper & ruler test and accidentally measure the ring size in inches, don’t worry! Most rulers have inches, centimeters and millimeters for you to convert it.

For extra help, watch the YouTube video above!

Method 3: Measure your finger with string

It can be a pain to know how to measure ring size in the proper way. That is why we’ve presented different methods for you to try out so you can feel confident with your ring size. Ring sizes for women don’t have to be too difficult to figure out! The string test will help you determine your US ring size.

Ring Size Guide & Tips:

(Help me find my ring size!!)

Still not quite sure how to determine ring size?

Check out this ring size chart for women!

With standard ring sizes, keep in mind that each ½ size measures about 0.4 millimeters. When measuring your finger, make sure your finger is at a normal body temperature and is not drastically colder or hotter than normal. When too cold or too hot, fingers can shrink or expand. If the knuckle is significantly bigger than the finger is at the base, take two separate measurements and choose a size in between. This is because you want the ring to fit over your knuckle, but not be so loose that it slides right off!

CM to Ring Size Converter

If you measured your finger or the ring in centimeters and need to convert it to millimeters, check out this CM to ring size converter chart! The information presented here is in line with the Official International Ring Size Conversion Chart. If you need help with how to measure ring size, how to figure out ring size or how to determine ring size, check out our ring size guide and our CM to ring size converter.

Shop Our Rings!

Now that you know how to measure ring size, how to determine ring size in millimeters, the average ring size for women, how to measure ring size in CM and you’ve mastered the CM to ring size converter, you’re itching to buy a ring!

The wonderful thing about Sincerely Silver’s wrap rings is that they are already slightly adjustable. If you have a general idea of your US ring size due to the top 3 methods presented in this post, then you can be confident you will purchase the right ring size.

In addition...

...the second great thing about our wrap rings is that they are all entirely customizable! Whether you want your name, a date, coordinates, an initial or a mama bear engraved, we can do it! Whatever you find meaningful, we can engrave. We completely understand wanting to keep a meaningful name, initial or set of coordinates close to you always, which is why all of our jewelry is customizable!!  

No more screaming at your friends, help me find my ring size!! You have mastered how to measure ring size and you now know everything there is to know about ring sizes for women, including the average ring size for women and how to determine ring size in CM.   

Check out our unique collection of personalized wrap rings!!