How to Measure Bra Size: A Comprehensive Guide


Welcome to our comprehensive guide on how to measure bra size. It’s essential to know your correct bra size to ensure comfort and support. However, finding the right size can be a challenge, especially for women who don’t know how to measure accurately. In this article, we’ll walk you through the steps on how to measure bra size correctly. We’ll also provide you with frequently asked questions and a table that you can use as a guide to determine your accurate size.

Why Knowing Your Bra Size Matters?

Hearing people say, “it’s essential to know your bra size” can be a bit repetitive. But why does it matter? Well, first and foremost, a well-fitting bra can provide you with comfort and support throughout the day. A bra that’s too tight or too loose can cause significant discomfort, leaving you feeling irritated and distracted. Knowing your accurate bra size can also help you determine what style of bra to wear. You can shop with confidence and avoid those annoying ill-fitting moments.

Factors Affecting Bra Size

Several factors can affect your bra size. These include age, hormonal changes, weight fluctuations, and pregnancy. As such, it’s essential to measure your bra size every six months to ensure a proper fit.

How to Measure Bra Size Step-by-Step

Now that you understand why it’s essential to know your bra size let’s get into the steps you need to follow to measure it accurately.

Step 1: Determine Your Band Size

To determine your band size, you’ll need to measure around your torso, just under your bust. Use a measuring tape and ensure that it’s snug around your chest. If the measurement is an even number, add four inches. If the number is odd, add five inches.

Step 2: Determine Your Bust Size

To determine your bust size, measure around the fullest part of your breasts with a measuring tape. Ensure that the tape is snug but not too tight to give an accurate measurement.

Step 3: Calculate Your Cup Size

To calculate your cup size, subtract your band size (the number you got in step 1) from your bust measurement (the number you got in step 2). The difference between the two will give you your cup size. Below is a chart to help you calculate your cup size:

Difference in Inches Cup Size
0-1/2 AA
1/2-1 A
2 B
3 C
4 D
5 DD/E
7 G
8 H

Step 4: Putting It All Together

Now that you’ve determined your band size and cup size, you can put them together to get your correct bra size. Use the following format:

Band Size + Cup Size = Bra Size

For example, if your band size is 36 and your cup size is C, your bra size is 36C

Frequently Asked Questions

Q: How often should I measure my bra size?

A: It’s recommended that you measure your bra size every six months or whenever you notice a significant change in your weight or body shape.

Q: Can I measure my bra size on my own?

A: Yes, you can measure your bra size on your own using a measuring tape and the guidelines we provided above. However, it’s always best to get a professional fitting if you’re unsure.

Q: Do all bra brands fit the same?

A: No, different bra brands have unique sizing systems, and some may fit differently than others. As such, it’s essential to try on bras from different brands to find the perfect fit for you.

Q: Is it normal for my bra size to change throughout the month?

A: Yes, hormonal changes can cause your breast size to fluctuate throughout the month, so it’s normal for your bra size to change slightly during certain times of the month.

Q: Can I wear the same bra size for every style?

A: No, different styles of bras may fit differently, so it’s essential to try on different styles to determine the right size for each.

Q: How can I tell if my bra doesn’t fit properly?

A: Signs of an ill-fitting bra include the band riding up, spillage or bulging, straps digging into your shoulders, and cups that gap or wrinkle.

Q: Can wearing the wrong size bra cause health problems?

A: Yes, wearing an ill-fitting bra for an extended period can cause neck pain, back pain, and poor posture.

Q: Should I wear a bra when measuring my bra size?

A: Yes, wearing a bra when measuring your bra size can help you get a more accurate measurement.

Q: Can I measure my bra size while pregnant?

A: Yes, you can measure your bra size while pregnant. However, it’s recommended that you measure more frequently as your body changes throughout pregnancy.

Q: How can I tell if my bra is too small?

A: Signs that your bra is too small include bulging or spillage, underwire that digs into your skin, and discomfort or pain.

Q: Can I measure my bra size without a measuring tape?

A: No, a measuring tape is essential for accurate measurements. However, if you don’t have one, you can use a string or ribbon and a ruler to measure.

Q: Can I measure my bra size if I have breast implants?

A: Yes, you can measure your bra size if you have breast implants. However, it’s best to consult with your surgeon or a professional fitter to ensure you get an accurate measurement.

Q: How many bras should I own?

A: It’s recommended that you have at least three bras to rotate throughout the week.

Q: How do I know when to replace my bra?

A: It’s recommended that you replace your bra every six months to a year or when the band becomes too loose or the cups lose their shape.

Q: Where can I get a professional bra fitting?

A: You can get a professional bra fitting at most lingerie stores or department stores that sell bras.


Congratulations, you’ve made it to the end of our comprehensive guide on how to measure bra size. We hope you’ve found this guide helpful in determining your accurate size. Remember, measuring your bra size is essential to ensure comfort and support throughout the day. We encourage you to take action and measure your bra size using the steps we’ve provided. Don’t forget to use our chart and frequently asked questions as a guide. Happy measuring!


It’s essential to note that the guidelines we provided above are just that- guidelines. No two bodies are the same, so it’s best to use these steps as a starting point and adjust as necessary. Also, always make sure that you’re comfortable in the bras you wear. A well-fitting bra should be comfortable, provide support, and enhance your natural shape.


Thank you for reading our guide on how to measure bra size. We hope you found this article informative and helpful. Remember, finding the perfect fitting bra can be a challenge, but with our guide, you’re one step closer to achieving the perfect fit. If you have any more questions, feel free to comment below, and we’ll be happy to help.

Disclaimer: The information provided in this article is not intended to replace professional advice. Always seek the advice of a professional fitter or healthcare professional before making significant changes to your bra size or fit.

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