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We provide a measurement range for each band and cup size so you don’t have to worry about rounding-we did it for you! But a 30D cup is equivalent to a 34A in terms of cup volume! That’s just one example of why it’s critical to use a bra cup size calculator or chart like ours that determines cup size by subtracting the band measurement from the bust, and not the underbust measurement from the bust. The band size should be 30 and the cup size should be D.
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Lots of bra size calculators and bra size charts do not do this correctly! Many calculators (like this one from Linda’s online and this one from ) make the critical mistake of first giving a band size that’s your underbust measurement +4, and then giving you a cup size that’s the difference between your bust and your actual underbust.įor example, when I entered in an underbust measurement of 30” and a bust measurement of 34” in the calculator, it gave me back a size of 34D! This is both a band size and a cup size that are much too large. Thus, a correct cup size measurement subtracts your band measurement from your bust measurement to reach cup size. (See this chart from La Senza, which bizarrely adds up to six inches to the underbust to give band size!)īras: they don’t make ’em like this anymore.Ĭup size expresses the approximate difference between your bust and your band, with a 1 inch difference corresponding to an A cup, a 2-inch difference to a B cup, and so on. A bra size calculator or bra size chart that adds several inches to your underbust size to give you your band size will consistently give results that are too loose in the underbust and too small in the cups. This is because when bras were first designed, they were made of pretty stiff fabric-so without the extra four inches you wouldn’t be able to breathe! But now that bras are made out of stretchy, elasticated fabrics, this isn’t necessary. Why am I calling attention to this? Well, some bra size charts or calculators may add four inches (or some other number) to the underbust measurement to get your band size, which is incorrect. If it’s an odd number, you’ll add one inch. Your band size should essentially be your underbust measurement (more on that in the next section) rounded to the nearest inch. So, 28 inches, 30 inches, 32 inches, and so on. It uses your rounded underbust measurement as your band measurement.īra band sizes go in 2-inch increments. So how do you know that our chart is reliable? It goes without saying that a bra size calculator or bust size chart is of no use to you if it calculates bra sizes incorrectly. Note: DD is interchangeable with E and DDD is interchangeable with F. Looking for a reliable bra size calculator or bra size chart? Look no further than our bra-size chart, presented below!Īmerican Bra Sizes Chart Underbust (down) / Bust (across) Hey, just be glad this isn’t the women’s underwear situation anymore. See our reliable bra size chart in the next section. With all that said, a bra size calculator or breast size chart can be a useful tool, provided you choose a reliable one and use it correctly. One woman with a 31-inch underbust measurement may wear a 30” band, while another woman may wear a 32 or even a 34. There’s another, more salient reason why bra size calculators and bra size charts often don’t work. You would think that in this modern era bra sizing would be more standardized, but alas, it’s not. These charts might tell you the correct size in one brand, but they certainly won’t tell you the correct size in other brands. This is doubly a problem because there are so many brand-specific bra size calculators and bra size charts out there. First, not every brand sizes their bras exactly the same. Unfortunately, it’s pretty difficult for a bra size calculator or bust size chart to give an accurate measurement all the time. For bra size charts, you usually find your underbust measurement on one side, your bust measurement on the other, and find the size in the chart. For bra calculators, you usually enter in your underbust and bust measurement, hit enter, and get back a bra size. What’s a Bra Size Calculator? Do They Work?Ī bra size calculator or bra size chart is designed to simply calculate bra sizes for you. But do they really work? How do you find a good bra size calculator? In this article, we’ll discuss how bra size calculators and bra size charts work, provide our own reliable bra size chart, and explain how to use it! We also include a US-UK bra size converter. Just enter in some measurements, and voila! It will calculate bra sizes for you.
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The idea of a bra size calculator or bra size chart can be really appealing.
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