Bras are sized by both chest measurement (in inches) and cup size (in letters); thus, a 38B bra is designed to fit a person who is 38″ around the chest with a B cup. We’ll get to cup size in a minute.
By the way, when you go shopping, you’ll find that many bras will be labelled in three systems of sizing: US, UK and European. We’re talking about the US system here. But we digress.
You need to take two measurements: chest and bust, as shown here. Take them without a top on. If you wear a bra, we suggest you unfasten it so its tightness doesn’t distort the measurements. It’s easiest if you have a friend help. A cloth measuring tape is best.
- These sizes are only approximate and should be used only as a suggested starting point. Body shapes and proportions will greatly affect your actual size and fit, and trying on is the only way to be sure of a proper, comfortable fit. Bra sizes vary between manufacturers and even between styles. Do not use this calculator for non-returnable purchases.
- The results this calculator gives may not always be what you expect. If you find errors or have comments on it, please leave a comment below .