Home Healthier LifeWoman How to Measure Bra Size: A Guide

How to Measure Bra Size: A Guide

by Tatiana Plesco
Measure Bra Size

Studies estimate that 80% of women wear the wrong bra size.

This isn’t only a problem for your ta-tas. The wrong bra can cause back pain, tension headaches, and poor posture. Plus, an ill-fitting bra can look unsightly under your clothes, causing bra lines and awkward lumps and bumps.

Finding the correct size doesn’t have to feel like a game of trial and error. With a few simple steps, you can choose the best bra for your bust.

Read on to learn how to measure bra size using only a tape measure and easy math.

Measure Your Band Size

The first step to determine your bra size is to find your band fit. This is the number part of the bra size.

With a soft measuring tape, measure in inches around your body, placing the tape under your breasts. The tape should be snug but not too tight.

If your measurement is an even number, add four inches. If it’s odd, add five. Round up for measurements that are between two whole numbers.

The new number you get is your band size.

Measure Your Bust

Next, measure your bust. Place the tape measure around the fullest part of your bust.

Just as you did when measuring your band size, make sure the tape measure is comfortably snug without pressing or squeezing on your chest.

Note, in inches, the nearest whole number.

Determine Your Cup Size

To find your cup size, you’ll need to do a simple calculation using your band and bust measurements.

The difference between these two numbers determines your cup size. Take your calculated band size and subtract it from your bust in inches.

If, for example, there is no difference between the two numbers, your cup size is AA. If the difference is greater, your cup size will be larger:

  • one-inch difference = A cup
  • two-inch difference = B cup
  • three-inch difference = C cup
  • four-inch difference = D cup
  • five-inch difference = DD cup
  • six-inch difference = DDD or F cup

Signs Your Bra Size Is Wrong

These measurements and calculations will help you get a general idea of your correct bra size. However, not all bras and brands are the same.

Some brands use a different measurement system, so it’s best to check a store’s size guide before buying.

You should also be aware of common signs of a bad fit when you’re in the dressing room. For example, if the straps leave marks on your shoulders, the size is likely too small.

Your bust should also never spill over the cups. This is common with demi and shelf-style bras. Instead, try Rhonda Shear bras that offer support and coverage for the entire bust.

On the other hand, there shouldn’t be gaps in your cups either. This means your cup size is likely too big.

If you suspect your bra doesn’t fit right, even after measuring, try changing just one aspect of your bra size at first. For example, if your bra is too tight, opt for a larger band size but keep the cup size the same.

Continue experimenting with sizing up or down until you find a comfortable fit.

How to Measure Bra Size

The right bra size not only looks good but feels good, too. Use these quick steps on how to measure bra size to find your best fit.

For more clothing tips, check out our other style articles!

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