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22.11.24

This Is How to Secretly Find Her Ring Size

We’re huge fans of the engagement ring. Massive. We live for those electrifying moments of pure joy. You know, when one of you is kneeling in front of the other with a little blue box? Chills. But slipping the sparkler on their finger only for it to not get past the first knuckle? That can be a real bummer. Ring size is important, folks. And getting it right, even more so. But how do you measure your partner’s size without them sizing up what you’re doing? Let’s discuss.

A Quick Caveat About Secretly Finding Their Ring Size

Before we get into covert operations here it’s worth discussing whether secretly finding your partner’s ring size is actually worth it.

Hear us out: There truly isn’t anything worse than realizing the custom engagement ring you spent months designing and saving for doesn’t fit. What’s more, many engagement rings can’t be resized due to their design. So, if you’re spending all that time and money on a ring, make sure it fits. We can help with that. We offer a complimentary ring sizer with every order. You’ll receive a ring sizer in the mail so you can get the ring right on the first try.

Read all of the above and still want to bamboozle your Bae? Understood. Luckily, you have options.

Pave engagement rings with diamond details around the band are beautiful but can’t be resized. Talk about amping up the stakes.
An emerald cut diamond with bezel setting and baguette half eternity band is adjusted on a  finger
Another pro of asking friends or family? They also most likely have insights into the type of engagement ring your partner prefers!

Ask Your Partner’s Family or Friends

If your partner wants a complete surprise and you find that you can’t simply ask them for their ring size, ask the people closest to them. Yep, we’re talking friends and family. They might be able to slip you your partner’s size. Even better, if your partner has a sibling around the same age and sex it could be worth seeing how strong genetics are by comparing fingers.

Borrow a Ring They Already Own

One of the easier ways to doggedly determine size is to use what you already have. Or rather, what they already have. Borrow a ring you’ve seen them wear on their ring finger and place it over a printed version of our ring size chart below. Line up the ring so it overlaps with a circle as perfectly as possible. Easy-peasy.

Just be aware that not all finger sizes are the same. Even the size of your ring finger on your right hand can differ from the size of your ring finger on your left. So do things the right way, and measure left.

The Deco Edge engagement ring is worn next to the Grand Baby wedding band
Looking for a ring with an all-over gorgeous glow and phenomenal finger coverage? Meet The Deco Edge. This diamond forward ring creates a cohesive and central look by setting all three stones within a thin bezel.
A ring size chart has five rows of circles with different circumferences so you can place a ring over each circle and find the right ring size
This chart is at-scale so all you need to do is print it out, measure, and dive into the dazzling world of engagement ring shopping.
A person tries on engagement rings at Frank Darling.
Ok, so maybe playing dumb and finding yourself “randomly” in front of a jewelry store isn’t the best way to discover her ring size without suspicion….but it is guaranteed to get you that correct size.

Play Dumb to Find Ring Size

Playing clueless here is your golden ticket! Pretend “engagement ring” or “proposal” are the last things on your mind. Then, innocently, grab a string during a casual moment—maybe you’re crafting or fixing something. Slyly loop it around your partner’s ring finger, tightening just enough so it’s snug, but not tight. Act like it’s just part of the fun. After marking where the string overlaps, quickly measure it when they’re not looking. Voilà! You now have the circumference. It’s a devilishly clever way to get that crucial measurement while keeping your ultimate secret safe.

Compare Fingers

Another not-very-foolproof-but-very-useful-to-know way of getting ring size is by comparing hers to yours. Dive into a moment of playful hand-holding, or maybe during a casual comparison of hand sizes, focus on how her ring finger sizes up next to yours. Perhaps her ring finger matches the size of your pinky, or maybe it aligns with a different finger. In that fleeting moment, commit the comparison to memory. Later, sneak away to measure the finger of yours that was closest in size to hers.

This act, while seemingly innocent, provides a rough estimate of her ring size. Keep in mind, this method is more art than science, blending casual observation with a dash of guesswork. It’s a clever tactic in the subtle art of gathering intel, allowing you to maintain the surprise while inching closer to securing that perfect fit for the perfect moment.

A round floating diamond sits atop a sleek curved yellow gold band
If you’re uncertain about her ring size then make it a point to verify your store’s return and resizing policy! Because accidents and mis-measurements can happen!

What to Keep in Mind to Accurately Find Ring Size

Ok, so finding your partner’s ring size might be a little bit more difficult than you originally thought. Not to worry, just breathe and try to keep the following useful tips, tricks, and tools in mind, and you’ll be right as rain in no time at all.

Understand the ring size scale

Just like fingers, ring size can vary. Ring sizes dance along a scale from size 3 to 13, each snugly corresponding to the finger’s circumference in millimeters. Hovering between size 6 and 7, the average woman’s ring finger is your target.

But remember, this number isn’t set in stone; it can shimmy up or down based on body size, height, and even the whims of the weather—fingers do love to swell in the heat! With sizes stepping up in precise quarter or half-size increments, picking the perfect ring can quickly become an art form.

A round brilliant engagement ring is examined.
Keep in mind that the size of the band can also affect the size of ring you order. Thicker bands tend to run a bit smaller than thin bands.
A Toi et Moi engagement ring is tried on. On the left, a Marquise diamond, next to it is an emerald cut diamond of the same length
And no, the amount of diamonds on your ring will not affect the fit. So go ahead, shop Toi et Moi, three stone, five stone, and more!

Measure their ring size in the evening

Believe it or not, your ring size can fluctuate throughout the day and the best time to measure is, in fact, the evening. This is because everything from activity levels to hydration, can contribute to an everchanging size.

Fingers are most likely at their largest at night so measuring at this time ensures the ring will comfortably fit through the highs and lows of daily adventures.

Bigger is better

Choosing a ring size that’s a tad generous is like picking the bigger slice of cake – it’s simply easier to manage than a too small ring. A ring that’s slightly roomy will still grace your finger.

If your ring is too big and can’t be resized, fear not, we have a nifty trick up our sleeves. Mainly, “speed bumps”—tiny sizing beads that nestle inside the band. They’re like the friendly traffic controllers for your ring, giving it just enough nudge to stay put without cramping your style. This clever adjustment keeps your ring secure and stylish, ensuring it’s always ready for a close-up, with no resizing required.

A five stone engagement ring with central green Montana Sapphire surrounded by two trillion cut stones and two flush set round stones
Speed bumps are a nifty trick that can help any engagement ring fit better.

Measure Twice, Wear Forever

You’ve managed to sneakily get their ring size, well done. Now what? Well, now darling, you’ve got to pick out a ring! Explore our collection of signature engagement rings to get a bit of inspo or start designing your own dream ring with our style quiz, and you’ll even get a free sketch! 

Check out our diamond collection where you can view 360-degree images of more than 10,000 diamonds, or book a virtual or offline appointment at our New York salon to view certified lab-grown and natural diamonds in person.

Not finding what you’re looking for? Email us with what you’re looking for at hello@frankdarling.com. We’ll curate a list of 5-7 exclusive stones that are just right for you.

FAQs

How do I find out my ring size at home?

Finding your ring size at home is easier than you think. Start by grabbing a strip of paper, a string, or a thin piece of ribbon and wrap it around the base of your finger, making sure it’s snug but not too tight. Mark the point where the end meets the wrap with a pen. Then, lay it flat and use a ruler to measure the distance in millimeters. This measurement corresponds to your finger’s circumference. To convert this into a ring size, compare the length to a ring size chart, which you can easily find online.

Remember, it’s best to measure your finger at the end of the day when it’s likely to be at its largest. If your measurement falls between two sizes, opt for the larger one to ensure a comfortable fit. With these simple steps, you’ll have your ring size in no time at all, all from the comfort of your home.

A bezel set, solitaire Asscher cut diamond
In a rush and needed that engagement ring like yesterday? Consider any of our Quick Ship rings! These stunning rings are ready to ship as soon as you figure out your ring size.
A three stone engagement ring with a radiant center diamond and two tapered baguette stones
We get it, math is hard. If you have any questions about your diamond, engagement ring, care, or sizing, don’t be a stranger! Drop us a line at hello@frankdarling.com and we’ll get you sorted.

How do I find my ring size in centimeters?

Converting your ring size from millimeters to centimeters is relatively easy. Since there are 10 millimeters in 1 centimeter, simply divide your millimeter measurement by 10. For example, if your finger measures 52mm in circumference, dividing by 10 gives you 5.2cm. This value represents the same measurement but in a different unit. Utilize this centimeter measurement to compare against ring size charts that list sizes in centimeters, ensuring an accurate ring size fit. Remember, precision is key for a comfortable and correct ring size, so take care when measuring and converting your figures.

What’s the average ring size for a woman?

The average ring size for a woman typically falls between size 6 and size 7 in the U.S., translating to around 16.5 to 17.3 millimeters in diameter. However, this is a general range and individual ring sizes can vary significantly. Factors like climate, time of day, and even diet can affect finger size. To ensure the best fit when unsure, many jewelers recommend choosing a size 6.5 as a starting point. It’s always best to get professional sizing if possible or to measure the finger under various conditions to account for fluctuations in size.

A solitaire rose cut engagement ring is surrounded by two chevron diamond bands
While the average ring size is important, it’s equally important to understand that many people operate outside of it. So measure with care, whether its for an engagement ring, wedding band, or more.
A Toi et Moi ring with radiant diamond and sapphire stone.
Men deserve rings too! And on top of that, they deserve well-fitting works of art.

What’s the average ring size for a man?

The average ring size for a man typically ranges from size 9 to size 11 in the U.S. This corresponds to approximately 18.9 to 20.6 millimeters in diameter. However, just like for women, men’s ring sizes can vary widely depending on factors such as body type, occupation, and even the region they live in. For those who may be uncertain about their correct size, starting at a size 10 is often advised, as it is squarely in the middle of the average range.

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Molly

Currently blending luxury with lexicon to pen, edit, and manage the Frank Darling journal, Molly has written for VRAI, Clean Origin, and Olivia Ewing Jewelry. A lover of all things sparkly (including disco balls), she prefers portrait, step, and vintage cut diamonds with warm champagne hues.

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