★ get free tracked shipping worldwide on orders $250+ ★  


Your Cart is Empty

Getting ready to propose? Here’s the first challenge: find her ring size.

If you’re already getting antsy about keeping a secret, there are plenty of easy ways to find out her ring size without breaking a sweat. And without her knowing! 

We're giving you several options to find her ring size, depending on whether you have any help from accomplices, whether the ring can leave the house or not, and even some sneaky ideas for when she doesn’t wear rings!

Keep on reading, or take the quiz, to find out how to get your partner's ring size, without asking. 

take the quiz


If you can get your hands on one of her rings you can take it to a jeweler and get it measured. You'll need to make sure that the ring actually fits her properly and that it's worn on the correct finger (left ring finger for engagement rings in the US), as all fingers are different sizes. There even tends to be a size difference between the left and right hand!

If she doesn't wear a ring on that finger you can settle for an estimated measurement for another finger, but keep in mind the ring may need to be resized. 


  • Put the ring on yourself and mark it 

    When she does wear rings, but you are unable to take her ring to a jeweler without her noticing it’s missing, there are several ways you can estimate the size without taking the ring out of the home. 

    Good times for these are when she takes off her rings before she goes to bed, before she has a bath or before she dyes her hair. 

    You can try the ring on yourself and mark where it falls on the inside of your finger. Then you can print ourfree ring sizer on thick paper or use our paper ring sizer and find the size that falls in the same spot.

  • Check the ring on a ring sizer

    Check the ring directly against our free ring sizer printed on thick paper, or use our paper ring sizer

    Do make sure she wears this ring on the same finger you'd like to get her a ring for! It's very common for the ring finger on the left hand and on the right hand to be different ring sizes. 

  • The secret soap test

    Alternatively, you can try the soap bar imprint. Basically, steal her ring and press it into a bar of soap to make an impression of the size. If it has a large stone, make sure you get an imprint of the entire ring band. 

    Then carefully rinse it off, put the ring back where you found it and hide the soap (because leaving the soap out with the ring imprint may spark questions). 

    All you have to do is match the inside of the band to a size chart like this one here to get a starting measurement for her finger.


Can you not borrow one of her rings, not even for a second? 

  • Pop a math quiz

    Tell her that you just read that if you take your shoe size and divide by two and then add two, you get your ring size. Have her walk through the calculations to see if it's correct for her and hopefully she'll tell you her actual ring size. This equation doesn't actually work, but you'll get her talking without directly hinting that you may be buying her a ring. 

  • Clean her ring

    Score a point by noticing the gemstone on her ring got a little dull. Shouldn't she clean it? You can take it to that jeweler near your office to have it cleaned for her.  

  • Get her a promise ring

    Already know you'll eventually propose? Get started with a promise ring.  


  • Have a cocktail or two 

    If she wears no rings it becomes more difficult - but not impossible. While she's in deep sleep, use our free printable ring sizer or paper ring sizer to measure her finger. Just make sure she's not a light sleeper. Some cocktails usually help ;)

  • Get an engaged or married accomplice 

    If one of your partner's friends is engaged or married, you can ask her friend to let your girlfriend try on the ring. This will give you a rough idea of the size if you don't mind asking her friend for the size. Bonus: you can also use this as an opportunity to ask what she thought of her friend's or the giftee's ring and probe what style of ring she'd like for herself.

  • “It’s for someone else”

    Another option, but with the risk of giving it away if you don't package it well enough as a spontaneous need, you can ask her to try on a ring you want to buy for someone else, like your sister or your mother. 

Know her ring size already?