How to Find Ring Size When Shopping for an Engagement Ring

Do you know the ring size of your significant other? It’s a pretty important detail to know when deciding to take that next step in a relationship, but many don’t know how to find out this information. Before you begin your journey of shopping for engagement rings, follow these insights to help you accurately measure ring size and find out what size ring you should buy.

Why Ring Size is Important

Imagine this: You get down on one knee, nail the speech you had planned, pop the question, (she says yes) and then you go to slide the ring on her finger and it doesn’t fit. Knowing what size ring you should buy for an engagement ring is extremely important if you want the proposal of your and her dreams to go as planned. Finding correct ring sizes for women may seem like next to nothing compared to actually picking out the ring, but if you don’t want to bother with bringing it back to a jeweler for ring resizing down the road, then it’s something you should know before beginning your search.

A man proposing to a woman on top of a mountain. Some consumers think finding ring size is almost impossible if you want to keep the proposal a secret, but there are many ways you can easily determine the correct size. From asking friends and family for help to stealthily using a current right-hand ring, there are many different methods you can use. Before you get too far in the shopping journey, it’s important to feel confident in the appropriate ring size to purchase.

If you decide to use an at-home method, be sure to perform the task multiple times to ensure you get the same result every time. Since there is more room for error in these methods, performing them numerous times will ensure your result is accurate. It’s true that having a trained professional measure your finger will be more accurate, but that doesn’t mean you should rely on their opinion solely. It’s still a good idea to understand how to determine your ring size so that you can trust your jeweler is telling you the appropriate size. Follow these tips and take the quick quiz below to know which method for finding ring size is right for you.

Tips for Finding Ring Size

Although the common practice for proposing is to keep it a secret, there are many couples today who choose to make the decision together. This is great for many different reasons, from talking about your preferences for natural diamonds or simulated lab created diamonds, to determining when you want the big event to happen. One of the biggest reasons is that together, you can ensure that the ring is a perfect style and fit. The most accurate method to measure ring size is to go into a jeweler to get sized. This way you can use a trained professional to help you find the right size.

It’s important to know a few other general tips when it comes to ring size for engagement rings. This will help you with accuracy and ensure you don’t waste time when shopping. One thing to note is that it is better to buy a size too big than a size too small. This is due to it being easier to take metal out of a shank than it is to add metal to it if you have to resize the ring. While some jewelers include a complimentary resizing for rings that need to be sized down, you might have to pay more for a ring that needs to be sized up since you will be paying for more metal.

A plain band, accented band and eternity band shown next to each other.

Another important thing to keep in mind is that rings that have a lot of accents will be harder to resize. This is the reason most jewelers won’t offer resizing for eternity bands. If you are purchasing an eternity band, make sure you are confident about the size you choose, as you may only get one chance to get it right.

Another tip to remember when finding ring size is to consider the size of the shank. Wider shanks tend to fit more snugly than thin shanks. This is another reason to stay on the larger size, in case the shank impacts how the ring fits. You should also know that time of day and temperature can affect the size of a finger. While hot climates can expand your finger and cause friction between the ring and your finger, cold climates can shrink it. Be sure to measure your finger in room-temperature, and once the ring is purchased, make sure to never wear it around cold bodies of water as it could slip off more easily.

Which Method is Right for You?

Now that you know tips for finding the right ring size for an engagement ring, it’s time to find out which method is best for you. Depending on whether you’re keeping it a secret or not, the perfect method will vary from person to person. While some are planning a surprise, others may be planning to make the decision as a couple. No matter what method you choose to pursue, the end result will still be an amazing proposal for both of you. Here are a couple of different methods that will help you find the correct ring size of your loved one.

Use a Right Hand Ring

While it may be more difficult to figure out someone’s ring size without them knowing, it’s not impossible. A great way to find the correct size, while still keeping the proposal a secret, is to use one of their current right hand or fashion rings. If you can score their ring without them finding out, you can then use it to figure out the size of their ring finger. If the ring is meant to be worn on a different finger, you might not get the exact size, but a jeweler should be able to approximate it. If you aren’t able to take it into a jeweler, you can find a ring size guide online that will allow you to find a match in the comfort of your own home.

A Diamond Nexus engagement ring being sized with a mandrel. If you do decide to take it to a jeweler, they may use a ring mandrel to measure it, which is a tapered metal rod. This tool can measure just about any size for men and women and is one of the most accurate methods to measure ring size. If you decide to use an at-home method, keep in mind that you might have to get it resized down the road. For most purchases, a ring resizing shouldn’t be a problem, but some rings, like an eternity band, are unable to be resized. This is because there are stones set around the entire shank. If a jeweler were to try and resize it, some settings and stones would be affected and the process could end up ruining the entire ring. Before purchasing your ring, check with the jeweler or company to verify it can be resized after purchase if needed. This is critical to find out before you decide which sizing method is right for your situation.

Use String and a Measuring Tape

If you don’t have a ring that you can borrow from your beloved, try using the string method to measure your significant other’s finger or a friend’s whose hands are around the same size. All you need is either string, twine or a similar household item that will easily wrap around a finger. Loop it around the finger until the two ends meet. Mark your material using a permanent marker at the two ends, then lie it flat against a ruler. Since ring sizes are recorded in millimeters, you’ll want to record your measurement in millimeters as well. Once you have an exact number, you can let your jeweler know so they can help you find the right size. If you’re purchasing online, you can either call customer service to verify the size, or they may have extra resources for you to confirm on your own.

Ribbon being tied around a finger to determine ring size then placed next to a ruler.

The Right Method for You

Now that you know the different methods you can use to find ring size, take our short quiz to find out which method is the best for you. Once you land on a suggested method, you can begin finding the correct ring size.

Congratulations! You are now prepared to begin this exciting journey. While finding the right ring size may seem tricky, it’s more than possible to accomplish through these key tips. Then once you determine the size, you’ll have time to dedicate to the proposal process. Finding the perfect engagement ring is a challenging task. Sifting through hundreds of styles at different price points is especially stressful, although it doesn’t have to be. If you decide to purchase a ring from Diamond Nexus, you can be sure that you’re getting amazing quality at an affordable price. Every piece is set with Nexus Diamond™ alternatives which are lab created diamond simulants that most closely simulate the look, weight and wear of a perfect diamond, at a fraction of the cost. Plus, every Nexus Diamond™ alternative is covered under a Lifetime Stone Guarantee which ensures it will never chip, crack or discolor. If something ever does happen, we’ll replace your stone for free. With that kind of reassurance, you can feel confident in your purchase for a lifetime.

View our unique engagement ring styles set with lab created diamond simulants.


*Diamond Nexus strives to provide valuable information, while being clear and honest about our products. The Nexus Diamond™ alternative is a patented lab grown stone that, among all simulants, most closely imitates the look, weight and wear of a mined diamond, with two exceptions – it is absolutely perfect in every way, and it costs significantly less. Price points and environmental facts expressed in this blog were taken from popular online retailers and may vary. Learn more about the environmental impact of mining by visiting out blog: blog.

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