Find My Bra Size

The Right Fit Changes Everything

Looking for the perfect bra starts with one essential step: finding your bra size. If you’ve ever wondered, “How do I find my bra size?” or, “How can I find my bra size at home?”, you’re not alone. The truth is, most women are wearing the wrong size, often without even realizing it. Felina’s bra experts are here to simplify the process with this easy-to-follow guide (and our Find My Bra Size Calculator) so you can feel supported, confident, and comfortable in your own skin—every single day.

Let’s start with the most important question: how do I find my bra size? Or maybe you’ve typed into Google how to find my bra size, how do I find out my bra size, or even how to find out my bra size in the U.S. We get it—navigating bras, cup sizes, and band measurements can feel overwhelming, and this is one of the most commonly searched questions when it comes to bras, but the good news is that bra sizing is easier than you think.

To measure bra size, all you need to get started is a soft measuring tape, a mirror, and a few quiet minutes to yourself. You’ll be taking two key measurements: your band size and your bustsize.

Step 1: Measure Your Band Size

To determine your band size, wrap the measuring tape around your ribcage, directly under your bust. Make sure the tape is snug and level across your back. Round to the nearest whole number. If it’s even, that’s your band size. If it’s odd, round up to the next even number.

Example: If your underbust measurement is 31 inches, your band size is 32. 

Step 2: Measure Your Bust Size

Next, measure around the fullest part of your chest—this is your bust size. Keep the tape comfortably loose, but level. Round to the nearest whole number here, too.

Now subtract your band size from your bust measurement. The difference between these two numbers determines your cup size.

Bust Size – Band Size = Cup Size

• 1 inch = A cup
• 2 inches = B cup
• 3 inches = C cup
• 4 inches = D cup
• 5 inches = DD/E cup
  …and so on.

If you’re still wondering how do I find my bra cup size?—that’s your formula. Two simple measurements and a little math, and you’re there.

Still Not Sure? Use Our Bra Size Calculator

If math isn’t your thing (we get it!), use our easy finding my bra size calculator. Just plug in your band size and bust size, and we’ll do the work for you. It’s the fastest way to get a personalized recommendation—whether you’re at home or on the go.

So next time you find yourself wondering, “How can I find out my bra size?” or “How to find my bra size in the US”, let us help. Our bra size calculator is made to take the guesswork out of the equation and to help you find your perfect Felina fit.

Why Your Bra Size Might Change

Here’s something most people don’t realize: bra size isn’t fixed. Your cup size, band size, and overall bust size can shift over time, thanks to changes in weight, hormones, pregnancy, workouts, and age. That’s why it’s important to re-measure regularly, especially if your bras are starting to feel off (too tight, slipping straps, gaping cups—you know the signs).

So if you’re on a journey of finding your bra size again, remember that you’re not back at square one—you’re just updating your fit.

Bra Fitting Tips From Our Experts: How to Know If It’s Right

You’ve measured, you’ve used our bra size chart, maybe even tried the bra size calculator—but how do you know if your size is really right? A good bra fitting comes down to these checkpoints:

• The band size feels snug, but not tight. It should sit level across your back without riding up.
• The cup size fully contains your bust—no spillage or gaps.
• The straps don’t dig in or slip off (Bonus: Felina bras come with adjustable straps for the perfect fit)
• The center of the bra lies flat against your chest

If all those feel right, you’ve found your match. If not, try a different bra style, or consider a sister size (going up in the band while going down in the cup, or vice versa).