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This bra size calculator has 3 easy steps and great tips for finding the right bra size. You can do it yourself, or have someone (a friend or a professional fitter) measure you, while you're wearing your most comfortable brassiere...cotton bras work really well for this. You'll need a soft measuring tape, and a pen and paper.
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Next, round this measurement to the nearest inch. So, for example if you measured 33 1/4", round up to 33"...if you measured 32 1/2", round down to 32". Write this down.
Now, to get your band measurement, take the number you wrote down and add 5" to it if it's and odd number...if it's even number then you add 4". Here's an example...

To determine your cup size, start from the middle of your back, hold the measuring tape and measure lightly all the way around the fullest part of your bust.
Round this number to the nearest inch. So, for example if you measured 33 1/4", round down to 33"...if you measured anything above 32 1/2", round up to 33". Write this number down.
Now, that you have the band size (1st measurement), subtract it from the (2nd) measurement. Write this number down and scroll down the listed chart below to find your cup size.
Keep in mind this sizing method is used only as a guideline. Sizing varies significantly between intimate apparel manufacturers, styles and fabrics. Now you know how bras are supposed to fit properly, you'll be able to tell which styles work well (and which ones don't) for you.
| Difference Between Band And Fullest Part Of Bust | Cup Size |
| 0 to1/2" | AA |
| 1/2"to 1" | A |
| 2" | B |
| 3" | C |
| 4" | D |
| 5" | DD or E |
| 6" | DDD or F |
| 7" | G |
| 8" | H |
| 9 | I |
| 10" | J |
For more great lingerie and bra fit tips read our page on
bra sizes.
