Bra Size Calculator

Measure directly under your bust, ensuring the tape is snug but not tight.
Measure around the fullest part of your bust, keeping the tape parallel to the floor.

Find Your Perfect Fit in Seconds

Woman measuring for bra size

Finding the perfect bra size can feel like solving a mystery. Many of us struggle with straps that dig in, cups that gap, or bands that pinch. The truth is, most women are wearing the wrong size without realizing it.

Our bra calculator takes the guesswork out of sizing. With just a few measurements, you can discover your true size and experience the comfort and support you deserve. No more second-guessing or endless trips to the fitting room.

What Is A Bra Calculator?

Think of our bra calculator as your personal fitting expert. It uses two simple measurements—underbust and bust—to determine your ideal bra size automatically. No more guessing or trial-and-error in the fitting room.

Unlike traditional sizing methods, our calculator:

How To Measure Your Bra Size

Measuring guide illustration

Step 1: Measure Your Band Size

Using a soft measuring tape, wrap it snugly around your ribcage, just under your bust. Keep the tape level and parallel to the ground. Breathe normally and don't pull too tight.

Step 2: Measure Your Bust Size

Measure around the fullest part of your bust, keeping the tape relaxed and level. Don't compress your breast tissue—the tape should just skim your skin.

Step 3: Use Our Calculator

Enter your measurements above, select your preferred unit and region, and let our calculator do the work. It's that simple!

Common Fit Issues and Solutions

Common bra fitting issues diagram

Band Issues

Cup Issues

Tips for Using the Calculator

Measurement tips illustration

Frequently Asked Questions