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How to Secretly Find Out Your Partner’s Ring Size

So, you’re planning to pop the question but don’t know your partner’s ring size? The last thing you want is a ring that doesn’t fit when you finally get down on one knee. Whether you’re browsing engagement rings Melbourne jewellers offer or shopping online, getting the right size is crucial. Luckily, there are several clever ways to figure out their size without giving away the surprise. 

Here’s how you can secretly determine your partner’s ring size without ruining your proposal plans.

man giving woman an engagement ring

Borrow a Ring They Already Wear

One of the easiest ways to get their ring size is by borrowing a ring they already own. Pay attention to which finger they wear it on—preferably the ring finger on their left hand if they’re right-handed (or right hand if they’re left-handed). Once you have the ring:

  • Take it to a jeweller to have it sized.
  • Trace the inside and outside of the ring on a piece of paper.
  • Press the ring into a bar of soap or clay to create an imprint.
  • Slip it onto one of your own fingers and mark where it stops, then measure that spot.

If they don’t have a ring that fits the intended finger, you can still use one from another finger and adjust the size accordingly.

Ask a Friend or Family Member for Help

Close friends, siblings, or parents may already know your partner’s ring size, especially if they’ve gone jewellery shopping together in the past. If they don’t, they might be able to casually bring it up in conversation without raising suspicion.

Another approach is to involve a friend in a shopping trip and have them encourage your partner to try on rings for fun. They can then take note of the size and report back to you.

Use a Ring Sizer on the Sneak

If your partner removes their rings when they sleep, shower, or work out, you might have a chance to measure it. You can purchase an inexpensive ring sizer online or at a jewellery store. When they’re not looking, slide the ring onto the sizer and note the measurement.

Alternatively, you can wrap a piece of string or a strip of paper around their ring and mark where it meets. Later, measure the length and compare it to a ring size chart.

Play the Jewellery Shopping Game

Casually bring up jewellery while out shopping or browsing online. Mention a piece of jewellery (not necessarily an engagement ring) and ask about their style preferences. If you find yourself in a jewellery store together, make it fun by trying on rings yourself and encouraging them to do the same. Pay attention when they find a ring that fits comfortably and take a mental note of the size.

Compare Hands for a Size Estimate

A sneaky but effective trick is to compare hands and fingers. Hold your partner’s hand and casually place their ring finger next to one of your own. If it looks close to the size of your pinky or another finger, you can use that as a reference when getting the ring sized.

This method won’t give you an exact measurement, but it can provide a useful estimate that a jeweller can adjust if needed.

Get Creative with a Fake Ring Story

If you’re comfortable being a little playful, create a scenario where you need their ring size. For example:

  • Pretend you’re buying a ring for a relative and need a size reference.
  • Say you found a ring in a store and are wondering if it would fit them.
  • Claim you’re participating in an online quiz or app that “guesses” a person’s ideal jewellery style and size.

A little white lie can help you gather the information you need without arousing suspicion.

woman showing ring on hand

What If You Guess Wrong?

Even with the best efforts, you might still get the wrong size. Don’t stress—most jewellers offer resizing services. It’s always better to go slightly larger than too small, as a ring that’s too tight may not fit at all, while a slightly larger one can still be worn until it’s adjusted.

If you’re worried about getting the wrong size, consider proposing with a temporary or adjustable ring, then shopping together for the perfect fit afterward.

Finding your partner’s ring size without them knowing can be a fun and creative challenge. Whether you borrow a ring, enlist a friend’s help, or get sneaky with comparisons, there are plenty of ways to get an accurate measurement while keeping the surprise intact. The effort you put into getting the right size will only make the proposal moment even more special.

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