Calculate your cup size. Here’s where the math comes in ... You’ve figured out your regular bra size, but what about a sports ...

The tape should just skim the bra in front. Step 3: Calculate to find your cup size If you're still wondering: "What is my cup size?" All you need to do is a little bra math: Subtract your band ...

Band size, cup size, what does it all mean ... an algorithm to calculate the correlation between your overbust and underbust to correctly determine your bra size. The wonders of technology, right?

Plus, you may even be a totally different cup or band size in different brands, just like how clothing sizes aren't uniform across the high street. Helpful, right? All you need to figure out your bra ...