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How To Measure For Bra Size UK How To Measure For Bra Size UK

For Women

How To Measure For Bra Size UK

Written by: Tish Kucera

Learn how to accurately measure your bra size in the UK for women. Find out the step-by-step guide and get the perfect fitting bra.

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Welcome to our guide on measuring for bra size in the UK. Finding the perfect-fitting bra can be a challenging process, but with the right measurements and understanding, you can ensure comfort and support. Many women are wearing the wrong size bra without even realizing it, which can lead to discomfort, back pain, and other issues.

By accurately measuring your band size and cup size, you can determine the best bra size for you. In this article, we will walk you through the steps to measure for bra size in the UK, helping you find the right fit and feel confident in your undergarments.

Understanding how bra sizes are measured is essential before starting the measuring process. The measurements consist of the band size (the circumference of your ribcage just below your breasts) and the cup size (the difference between your overbust and your band size). Different bra styles and brands may have slight variations in sizing, so it’s important to understand your measurements to find the best fit for you.

So, if you’re ready to discover how to measure for your bra size in the UK, let’s dive into the step-by-step process.


Understanding Bra Size Measurements

Before we begin measuring for a bra size, it’s crucial to understand the components of bra size measurements. Bra sizes consist of both a band size and a cup size. The band size refers to the circumference of the ribcage just below the breasts. The cup size represents the difference between the overbust (the fullest part of the breasts) and the band size.

Band sizes in the UK typically range from 28 to 46, while cup sizes are denoted by letters, starting from AA and going up to K and beyond. Each increase in cup size represents an increase of one inch in the overbust measurement.

It’s important to note that bra sizes can vary between different brands and styles. This variability means that finding the perfect-fitting bra may require some trial and error. Additionally, factors such as breast shape, spacing, and firmness can affect how a bra fits and feels.

Understanding your bra size measurements is the first step toward finding a comfortable and supportive bra. By knowing your band and cup sizes, you can start searching for bras that provide the right amount of support and flattering fit for your body.

Now that we have a basic understanding of bra size measurements, let’s move on to the step-by-step process of measuring for a bra size in the UK.


Step 1: Measuring the Band Size

The band size is the measurement around your ribcage, just below your breasts. This measurement determines the numerical part of your bra size. To measure your band size accurately, follow these steps:

  1. Start by wearing a non-padded, non-minimizing bra. This will ensure that your breasts are in their natural position.
  2. Stand in front of a mirror and wrap a tape measure snugly around your ribcage, just beneath your breasts. Make sure the tape measure is level and parallel to the ground.
  3. Take a deep breath and exhale fully. This helps to get an accurate measurement.
  4. Make note of the measurement in inches. Round the measurement to the nearest whole number. If the measurement is an odd number, add 1 inch to get your band size. For example, if your measurement is 31 inches, your band size would be 32.

Keep in mind that the band size should feel snug but not overly tight. If the tape measure is digging into your skin or leaving red marks, it’s too tight. On the other hand, if the band feels loose or rides up, you may need to go down a band size.

Now that you have your band size, let’s move on to measuring the cup size.


Step 2: Measuring the Cup Size

The cup size represents the difference between your overbust measurement (the fullest part of your breasts) and your band size. To accurately measure your cup size, follow these steps:

  1. While still wearing the non-padded, non-minimizing bra, position yourself in front of a mirror.
  2. Wrap the tape measure around your back and across the fullest part of your breasts. The tape measure should be parallel to the ground.
  3. Make sure the tape measure sits firmly against your body without compressing your breasts.
  4. Take note of the measurement in inches.
  5. Subtract your band size measurement (obtained in Step 1) from your overbust measurement. The difference between the two measurements will determine your cup size.

Refer to a bra size chart to identify your cup size based on the difference between your band size and overbust measurement. For example, if the difference is 1 inch, you would typically be an A cup. If the difference is 2 inches, you would typically be a B cup.

It’s important to remember that cup sizes are relative to band sizes, meaning that a B cup in a smaller band size will be smaller than a B cup in a larger band size. This is why bra size measurements are represented as a combination of a band size and cup size (e.g., 34B).

Now that you have measured your band size and determined your cup size, it’s time to calculate your bra size.


Step 3: Calculating Your Bra Size

Now that you have measured your band size and determined your cup size, it’s time to calculate your bra size. To calculate your bra size, combine your band size with your cup size using the following guidelines:

For example, if your band size is 34 inches and your cup size is B, your bra size would be 34B.

Keep in mind that bra sizing can vary slightly between different brands and styles. It’s always a good idea to try on bras in your calculated size to ensure the best fit and comfort.

Additionally, remember that the band size provides the majority of the support. If you find that the band feels too tight or too loose, you may need to adjust the band size accordingly and try a sister size. Sister sizes have the same cup volume but differ in the band size. For example, if your calculated size is 34B, you could try a sister size of 32C (going down a band size and up a cup size) or 36A (going up a band size and down a cup size).

It’s also essential to keep in mind that your bra size may change over time due to factors such as weight fluctuations, hormonal changes, and varying bra styles and brands. It’s always a good idea to re-measure yourself periodically to ensure you are wearing the correct size.

Now that you have calculated your bra size, it’s time to put your knowledge into practice and find the perfect-fitting bra for you.


Tips for Accurate Bra Size Measurement

Measuring for bra size can be a complex process, but with a few helpful tips, you can ensure accurate measurements and find the right fit. Here are some tips to consider:

  1. Measure yourself using a soft, flexible tape measure. Avoid using a metal tape measure or a measuring tape that is too rigid, as this can result in inaccurate measurements.
  2. Wear a non-padded, non-minimizing bra when measuring. Padded and minimizing bras can alter the shape and position of your breasts, leading to inaccurate measurements.
  3. Stand up straight and relax your shoulders while taking measurements. Good posture ensures that the tape measure is level and parallel to the ground.
  4. Measure your bra size regularly. Factors such as weight fluctuations, pregnancy, and hormonal changes can affect your bra size. To ensure a comfortable and supportive fit, it’s important to measure yourself periodically.
  5. Try on different styles and brands. Not all bras are created equal, and what works for one person may not work for another. Experiment with different styles to find the one that suits your body shape and personal preferences.
  6. Consult with a professional bra fitter. If you’re unsure about your measurements or struggling to find the right fit, consider visiting a lingerie store or boutique that offers professional bra fitting services. A trained bra fitter can help you find the perfect bra size and offer recommendations based on your needs.

Remember, finding the right bra size is not just about numbers and measurements. It’s also about comfort, support, and feeling confident in your lingerie. Don’t be afraid to explore different options and trust your own judgment when it comes to finding the perfect bra for you.

Now armed with these tips, you’re ready to measure your bra size accurately and find the perfect-fitting bra that will provide comfort and support for your specific body shape.



Measuring for bra size in the UK is an essential step in finding a bra that offers comfort, support, and confidence. By understanding your band size and cup size, you can ensure a proper fit and avoid common issues such as discomfort, back pain, and inadequate support.

Remember, bra sizing can vary between brands and styles, so it’s important to take accurate measurements and try on different options to find your perfect fit. Don’t be afraid to explore different styles and consult with a professional bra fitter if needed.

Regularly measuring yourself is crucial, as factors like weight fluctuations and hormonal changes can impact your bra size. Keeping an eye on your measurements ensures that your bras continue to fit properly and provide the support you need.

Now that you have the knowledge and steps to measure for bra size in the UK, it’s time to put it into practice. Take the time to measure yourself accurately, calculate your bra size, and explore different styles to find the bras that make you feel comfortable and confident.

Remember, finding the perfect-fitting bra is worth the effort. It can make a significant difference in your overall comfort, posture, and confidence. So, take the plunge, measure your bra size the right way, and embrace the amazing benefits that a well-fitted bra can bring to your everyday life.

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