Ways & How

How to Measure Bra Size

How to Measure Bra Size

A surprising number of women simply do not know how to measure bra size accurately. Too often, they get attached to a certain size expectation and insist on buying the wrong bra size for years. Sometimes they start off with a perfect fit but then experience certain body changes that alter their supportive needs, such as significant weight loss, weight gain, pregnancy, breastfeeding, etc. These changes can actually occur more frequently than you might expect; for some women, changes in bra size can occur several times in a year. A well-fitting bra can make you look instantly slimmer, firmer, and more put together. From a practical perspective, it can also affect your level of comfort throughout the day. A bra in the right size does not hike up or pinch, allowing you to forget that it’s even there. It also minimizes bulges and ‘pulls you up’, giving you a more graceful silhouette. In this tutorial, we will teach you how you can accurately measure your own bra size to find the perfect undergarment fit.

    1. When taking measurements for your bra size, you need to wear a non-padded, non-push-up underwired bra.

      u also need a soft measuring tape (the kind that tailors use), and preferably a full-length mirror so you can observe your posture. Since it can be tricky keeping the measuring tape straight by yourself, ask a friend to help.

    2. Stand straight but relaxed; your shoulders and back should be straight and loose, but you shouldn’t push your chest out or try to make your tummy smaller.

    3. Snugly wrap the measuring tape around your rib cage (or have your friend do it) right under the bust. Check that the measuring tape is parallel to the ground all around. ExWhen taking measurements for your bra size, you need to wear a non-padded, non-push-up underwired bra. You also need a soft measuring hale to expel all the air out of your lungs and get your measurement in inches. Note the number and round off to the nearest inch. Refer to the table below to obtain your band size:

      If you measured 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
      Then your band size is 30 32 32 32 34 34 34 36 36 36 38 38 40 40 42 42
      Rib cage measurement vs. band size

      As you probably already know, bra bands come in even-sized numbers: 30, 32, 34, 36, and so on. Therefore, your rib cage measurement corresponds to the nearest equal or larger band size.

    4. The next step is to measure for cup size. To do this, stand straight like you did before and have your friend measure your circumference right over the fullest part of your bust. The measuring tape should rest lightly on top of your bust, neither too binding nor too loose. Again, the tape should be parallel to the ground and you should exhale to expel all the air in your lungs. Note the measurement.

    5. Take the bust circumference in inches (rounding up like before) and subtract the band size measurement from it. For instance, if your band size is 36, and your bust circumference is 39, then you have a difference of 3 inches—making your bra size 36C. Refer to the following table to obtain your cup size:

      If the difference in inches between your band size and bust size is 1/2 1 2 3 4 5 6 7 8 9 10
      Then your cup size is AA A B C D/D1 DD/D2/E DDD/D3/F D4/G D5/H D6/I D7/J

      Bust size measurement vs. cup size

As you can see, your rib cage and bust circumferences determine your bra size. Simply combine the two in order to obtain your bra size: 36C, 42B, etc. While most department store lingerie sections do offer free professional bra fittings, knowing how to measure bra size on your own lets you check whether you should move up or down a size. Take note that, even in the right size, there is no guarantee that a certain bra will fit you perfectly. You may find that certain styles work better for your body than others.


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