You’ve planned the proposal. You’ve found the perfect spot. You know exactly what you want to say when the moment comes. But there’s one small detail that can feel like the biggest hurdle: how do you find out your partner’s ring size without giving the secret away?
You want the moment to be seamless, to slip the ring onto their finger and watch it fit like it was always meant to be there. So, how do you keep the surprise alive while making sure the engagement ring feels just right?
Here’s our guide to secretly finding your partner’s ring size, with tips that are as practical as they are romantic.
Why the Right Fit Matters
A ring isn’t just jewellery; it’s a daily reminder of forever. Too loose, and it risks slipping off. Too tight, and it becomes uncomfortable. Getting it right means that from the second you open the box, it feels natural, effortless, and perfect.
In the UK, the average women’s ring size is L–N, while the average men’s wedding ring size is T–U. But hands are as unique as love stories, which is why guessing isn’t always enough.
Borrow From Their Jewellery Box
The easiest method is to borrow a ring they already wear on the correct finger (or close to it). Slip it to a jeweller or use a printable ring sizing guide at home.
If it’s a ring from their right hand, remember that dominant hands can be slightly larger — a small but important detail.
Ask the People Who Know Them Best
Sometimes the secret is already out there, in a sibling, a best friend, or even a parent. A discreet message or a little teamwork can help you find out their size. If you’re lucky, they might even take your partner on a casual “window shopping” trip for rings and get the answer for you.
Trace It or Test It
Another subtle trick? Place one of their rings flat on paper and trace the inside circle. A jeweller can often use this to work out the size.
Make a Guess, Then Perfect It Together
If all else fails, you can compare their hand to yours. If their ring finger looks close to your little finger, use that as a guide. Or, and this is becoming more common, propose with a placeholder or “temporary” ring in an average size, then choose the real diamond engagement ring together. Many couples love this option because shopping for the ring becomes part of the story.
Astella’s Promise: Love That Fits Effortlessly
At Astella, we believe the perfect fit should be as effortless as love itself. That’s why:
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We offer a free ring sizing guide to help you measure at home.
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Every engagement ring comes with free resizing, because love doesn’t always fit perfectly the first time.
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We can design rings close to your vision and within your budget, whether you’re dreaming of a diamond engagement ring, a simple engagement ring, or a men’s wedding ring.
Your only job is to make the proposal unforgettable. We’ll take care of the fit.
So, how do you secretly find out your partner’s ring size? Borrow, ask, trace, measure, or simply let us adjust it for you afterwards. Because the truth is, the magic of the moment doesn’t lie in the millimetres, it’s in the promise, the love, and the story you’re writing together.