How to Secretly Find Your Significant Other’s Ring Size

By Published On: February 14, 2024

You have found the one and you’re ready to pop the question with a surprise proposal but don’t know your significant other’s ring size. It takes a lot of planning and effort to pull off a secret engagement. If subtlety is not your strong suit this will be no easy task. There is nothing worse than having the perfect proposal planned and then the ring not fitting. But don’t worry! There are so many tricks on how to secretly find your significant other’s ring size without them knowing or being suspicious.

Even though buying an engagement ring in the wrong size is not the end of the world, you do really want to get it right the first time and prevent any mishaps. Sometimes changing the size of the ring can mess up the settings, and if there are multiple diamonds or stones it can be tricky to resize. If the setting that holds your stone is compromised and loosened, stones could fall out if not careful.

Image from Gage Diamonds

Secretly Measure Your Significant Other’s Finger at Night

This will not work if your partner is a light sleeper. If your partner is a heavy sleeper, you can actually measure their finger during the night. There are multiple ways to do this. One way is to use an actual ring sizer if you think you can do it without waking them. Or you can take a piece of string and wrap it around the finger and then mark it with a marker.

Image from Brilliant Earth

Ask Friends

One of the best ways to find out your SO’s ring size is to ask their friends. And if the friend doesn’t know, they can easily ask the question nonchalantly. Another way is the friend can take your partner shopping, and they can try on rings together. This way, the ring finger will be professionally sized and you might learn what types of styles they like.

Mark Where Your Partner’s Ring Sits on Your Finger

Take one of your partner’s rings and mark where it sits on one of your fingers. Then show it to a jeweler and have them help figure out the size.

Borrow A Ring

If you can borrow your partner’s ring for a day, this is also a great strategy. So this doesn’t backfire on you, make sure to borrow a ring that they won’t notice is missing and that you know fits on their left ring finger. Also, sometimes the ring size is engraved inside of the ring.

Trace a Ring

If you are scared to leave the house with your significant other’s ring in case you lose it, take one of their rings and place it on paper. Draw a circle on the inside and outside of the ring. Do this multiple times so the traces look consistent. Take the piece of paper to an experienced jeweler and they should be able to figure out the ring size. You can also place a ring on or next to a ruler and take a picture to show to a jeweler.

Take Your Significant Other Ring Shopping

Pretend you are buying a ring for your mom or someone else and enlist your partner’s help. Have them try on rings in different sizes to “help” you; this way, you can learn the correct size.

Use Your Partner’s Weight and Height

Surprisingly an experienced jeweler can probably figure out your partner’s ring size by knowing their weight and height. Also if you can bring in a picture of your partner, they may be able to tell the size based on their hand in relation to something else.

Image from Holden

Ring Size Tips

  • The dominant hand is always bigger, so make sure you are measuring the left ring finger.
  • If you don’t know the exact measurements, buy a ring on the larger side.
  • Buy a ring guard if buying bigger as a solution until you can get it resized.
  • The most common women’s ring size is 6-6.5
  • The most common men’s ring size is 10
  • Wider bands have a tighter fit than thinner bands. If you are borrowing a ring, make sure the band is similar in size to the ring you plan on buying.
  • Finger sizes change throughout the day because of temperature. Fingers tend to expand when warm and shrink when cold. They tend to be puffier in the morning but shrink to their normal size during the day.
  • Work closely with your jeweler. Inquire about the sizing process before you buy, especially if you aren’t sure of the size. Some rings cannot be resized or are difficult to resize, and you may have to rethink your approach.
  • Sizing scales differ from country of sale or origin. The US and Canada use numbers while other places like the UK use letters.

Hopefully, these tips are helpful on how to secretly find out your significant other’s ring size. There are so many options to do this so pick one that works best for you!




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