Bra Size Calculator

Finding the right bra size is crucial for comfort, support, and overall health. A properly fitted bra can enhance your posture, reduce back pain, and provide the necessary support for daily activities. Our Bra Size Calculator helps you determine your correct bra size using simple measurements.

How to Measure Your Bra Size

Measuring Band Size

1. Put on a non-padded bra or no bra at all
2. Wrap a measuring tape around your torso, just under your bust where the bra band would sit
3. Keep the tape parallel to the floor and snug but not tight
4. Round to the nearest whole inch
5. If the measurement is odd, add 5 inches; if even, add 4 inches

Measuring Bust Size

1. Stand straight with your arms relaxed at your sides
2. Wrap the measuring tape around the fullest part of your bust
3. Keep the tape parallel to the floor
4. Make sure the tape is not too tight or too loose
5. Record the measurement in inches

Calculating Your Bra Size

The difference between your bust and band measurements determines your cup size. Use our calculator above to automatically determine your size, or refer to the tables below for manual calculation.

Bra Size

The two major aspects of bra size are the band size and the cup size.

Band size (frame size)

The band size is the size of the bra band around the torso. However, band sizes come in different measurements in different countries, in that sizes such as small, medium, and large, equate to different measurements. Refer to the table below for some size measurements, though some variation from the published measurements is possible.

Cup size

The cup size can be calculated using the difference between bust size and band size. Refer to the table below.

Why Proper Bra Fit Matters

Health Benefits

• Reduces back, neck, and shoulder pain
• Improves posture
• Prevents skin irritation and chafing
• Supports breast tissue and slows sagging

Comfort and Confidence

• Eliminates underwire digging into the skin
• Prevents bra straps from slipping off shoulders
• Provides all-day comfort for active lifestyles
• Enhances natural shape and silhouette

Performance

• Better support during physical activities
• Reduced bounce during exercise
• Improved breathing and movement

Common Bra Fitting Problems

Band Issues

• Band rides up: Band size is too large
• Band digs in: Band size is too small
• Band slips forward: Incorrect fit or style

Cup Issues

• Spillage: Cup size is too small
• Gaping: Cup size is too large
• Center gore doesn't lie flat: Incorrect cup size or style

Strap Issues

• Straps slip off: May need wider straps or different style
• Straps dig in: Straps are too tight or narrow
• Uneven pressure: Adjustment needed or incorrect size

Bra Size Conversion Tips

Different countries use different sizing systems, which can make shopping for bras confusing. Here are some tips for converting sizes when shopping internationally:

1. Always refer to conversion charts as a starting point, not a definitive answer
2. Sizes can vary significantly between brands, even within the same country
3. Consider the style and cut of the bra, as these can affect fit
4. When in doubt, try on bras or consult with a professional fitter
5. Keep in mind that your size may change due to weight fluctuations, pregnancy, aging, or surgery

How Often Should You Measure?

It's recommended to measure your bra size:

• Every 6 months
• After significant weight changes (10+ pounds)
• After pregnancy or breastfeeding
• After surgery
• If you experience discomfort in your current bras

Frequently Asked Questions

Q: Should I measure myself while wearing a bra? A: For the most accurate measurements, measure your band size without a bra or in a non-padded bra. For bust measurement, you can wear a non-padded bra.

Q: What if my measurements don't match standard sizes? A: Choose the closest standard size. Remember that different brands may fit differently, so you might need to adjust based on the specific brand and style.

Q: Why do my bra sizes vary between brands? A: Bra sizing is not standardized across brands. Each manufacturer may have slight variations in their sizing and construction methods. Always try on bras when possible.

Q: Does bra size affect my health? A: Yes, an ill-fitting bra can cause back pain, neck pain, shoulder grooving, and poor posture. A well-fitted bra provides support and comfort, contributing to better overall health.

Q: Can I use this calculator for sports bras? A: While this calculator provides a good starting point, sports bras often have different sizing and fit requirements. It's best to consult specific sports bra sizing guides for the most accurate fit.

Q: How tight should a bra band be? A: The band should be snug but comfortable. You should be able to fit two fingers underneath the band. If you can pull the band away from your body more than 1 inch, it's too loose.

Use our calculator above to find your perfect bra size and enjoy the comfort and confidence that comes with a properly fitted bra!