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Find her ring size

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!

Borrow her ring

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 re-sized.

When you can't borrow her ring

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 of 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 on the inside of your finger where it falls. Then you can print our free ring sizer ( (just sign up for the newsletter in the footer and you'll receive it instantly) on a thick paper and find the size that falls in the same place. 

Alternatively, you can try the secret ninja soap test. Basically, at the end of the night when she takes off a ring she wears, or when you manage to steal it from her when she is sleeping, press it into a bar of soap make an impression of the size. Make sure to 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). Then, all you have to do is match the inside of the band to an online size chart like this one here to get a starting measurement for her finger.

When she never takes her ring off

Can you not borrow one of her rings, not even for the soap bar test? 

1. 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.

2. Score a point by noticing that her center stone 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. 

When she wears no rings

If she wears no rings it becomes a little more difficult. But not impossible. While she's in deep sleep, use our printable ring sizer (just sign up for the newsletter in the footer and you'll receive it instantly) to measure her finger. Just make sure she’s not a light sleeper. Some cocktails usually help. 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 that you want to buy for someone else, such as for your sister or your mother. If one of your partner’s friends is engaged, you can ask her friend to let your girlfriend try on the ring. This will give you rough idea of the size if you don’t mind asking her friend for the size. 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.

Stuff that's good to know

  • If you have a particular finger you want purchase a ring for, please keep in mind there tends to be a small size difference between the left and right hand.
  • When in doubt, size up! A ring is easier to resize if it is too big, although not all our rings can easily be resized, so please ask before you buy.
  • The most common women’s ring finger size is 6 to 6.5 
  • Wider rings with a flat inside have a tighter fit than thinner round band

NOW THAT YOU KNOW HER RING SIZE....