You have the ring picked out, the plan in place and the nerves to prove it. Now for the sneaky part. Our favorite tried-and-true ways to find her ring size without blowing the surprise.
You have done the hard part. You know who you want to spend your life with, you have probably been staring at rings for weeks, and you may have already rehearsed the speech in the car. Then it hits you: what size is her finger?
Take a breath. After more than thirty years of helping nervous, wonderful, slightly sweaty proposers here in Portsmouth and Newburyport, my family has seen every trick in the book. Here are the ones that actually work.
1. Borrow a ring she already wears
This is the gold standard. Find a ring she wears regularly, ideally on her left ring finger, and quietly bring it to us. We can measure it in seconds and have it back in her jewelry box before anyone is the wiser.
A few things to keep in mind:
- The finger matters. A ring from her middle finger or right hand will usually be a bit larger than her left ring finger. For many people, the dominant hand runs slightly bigger. Tell us which finger it came from and we will adjust.
- Can't take it out of the house? Trace the inside of the ring on paper with a sharp pencil, or gently press it into a bar of soap to make an impression. Either one gives us something to work with.
2. Recruit an inside agent
Her best friend, sister or mom may know her size already, or can find out with a perfectly innocent "let's go try on rings for fun" afternoon. Just choose someone who can keep a secret. Every proposal has that one friend who cannot, and you know exactly who it is.
3. The casual shopping trip
Next time you are out together and walk past a jewelry store, wander in "just to look." She tries a few things on, you take mental notes, and nobody suspects a thing. Bonus points: you will also learn a lot about the styles she gravitates toward.
4. The midnight string trick (proceed with caution)
Yes, people really do try to measure a sleeping partner's finger with a piece of string. It is the stuff of legend. We will be honest: string stretches, fingers relax at night, and it is surprisingly easy to be off by a size or more. Treat this as a last resort, and maybe practice your excuse first.
5. Think about the seasons
Fingers swell a little in warm weather and shrink in the cold, a fact every New Englander knows well. If your measurement comes from a frosty January morning, the ring may feel snugger in July. A good jeweler will factor this in.
6. When in doubt, go a little bigger
If you truly have to guess, guess slightly large. A ring that is a touch loose will still slide on during the big moment. One that is too small might stop at the knuckle while you are down on one knee, and nobody wants that photo. Sizing a ring down afterward is usually simple.
One exception worth knowing: some designs, like full eternity bands and certain intricate or bezel-set styles, are harder to resize. If you are choosing one of those, tell your jeweler early so you can get the size as close as possible from the start.
After she says yes
Here is the best news of all: the size does not have to be perfect on proposal day. Once the ring is on her finger and the happy tears have dried, bring it to either of our stores and we will make sure it fits just right. Plenty of our favorite couples have walked in the morning after, still glowing, for exactly this reason.
We are in on the secret
Planning a proposal? Come talk to us at our Portsmouth, NH or Newburyport, MA stores, or send us a quiet note. We have helped a lot of people keep a lot of secrets over the years, and we would be honored to help with yours.
Still choosing the ring itself? Our guides to lab-grown vs. natural diamonds, bezel settings and planning a holiday proposal are a great place to start.