Simple Way to Calculate Your Lingerie Band and Cup

Let’s be real—finding the perfect bra shouldn’t feel like solving a math equation. But here’s the truth: most of us are wearing the wrong size. In fact, studies show that up to 80% of women are incorrectly sized. Yikes! The good news? Figuring out your right lingerie band and cup size is easier than you think. Let’s break it down in a simple, no-nonsense way.

Why Getting the Right Fit Matters

A well-fitting bra isn’t just about comfort—it affects your posture, confidence, and even long-term breast health. Too tight? Hello, back pain. Too loose? Say goodbye to support. That’s why knowing your band and cup size is a game-changer.

Step 1: Measure Your Band Size

The band is the foundation of your bra. To measure:

• Wrap a soft tape measure around your ribcage, just under your bust.
• Breathe normally—don’t suck in!
• If the number is even, add 4 inches. If odd, add 5. (This accounts for band stretch.)

For example:
- Underbust = 31 inches → Round up to 34 band
- Underbust = 32 inches → 36 band

Step 2: Measure Your Bust Size

Now, wrap the tape around the fullest part of your bust (usually over the nipple). Keep the tape parallel to the floor. No padding or push-up tricks—just natural form.

Step 3: Calculate Your Cup Size

Subtract your band size from your bust measurement. Each inch equals one cup size.

Example: Bust = 39", Band = 36" → Difference = 3" → Cup size: C

Pro Tips for Accuracy

• Measure in the evening—breasts can swell slightly throughout the day.
• Wear a non-padded bra or none at all.
• Check fit: The band should stay level and snug, not ride up.

Common Fitting Mistakes

Here’s where things go sideways:

• Band too loose: You’re compensating with tight straps.
• Cup gapping: Your cup is too big—try going down a cup and up a band (e.g., 34C → 32D).
• Spillover: Tissue bulging over the top? Time for a bigger cup.

Final Thoughts

Your body isn’t one-size-fits-all—and neither should your lingerie be. Taking a few minutes to calculate your lingerie band and cup size can transform how you feel in your clothes and in your skin. So grab that tape measure, follow these steps, and say hello to comfort, support, and confidence—all in one perfect fit.