Helping you find the best bras for all occassions

How to determine your bra size

  • By: Nicki
  • Date: July 26, 2023
  • Time to read: 3 min.

Wearing a properly fitted bra can make all the difference in your comfort and confidence. However, with so many different brands and styles available, finding the right bra size can be a challenge. In this article, we will guide you through the steps of determining your bra size to ensure you get the perfect fit.

What Is Bra Size?

Bra size is made up of two components: the band size and the cup size. The band size is the measurement around your ribcage just below your bust. The cup size is the difference between your band size and the measurement around the fullest part of your bust.

Step 1: Measure Your Band Size

To measure your band size, wrap a measuring tape around your ribcage just below your bust. Make sure the tape is snug, but not too tight. Round the measurement to the nearest whole number. If the measurement is an even number, add 4 inches. If the measurement is an odd number, add 5 inches. This will give you your band size.

Step 2: Measure Your Bust Size

To measure your bust size, wrap the measuring tape around the fullest part of your bust. Make sure the tape is parallel to the ground and not too tight. Round the measurement to the nearest whole number.

Step 3: Calculate Your Cup Size

To calculate your cup size, subtract your band size measurement from your bust size measurement. The difference between the two measurements will determine your cup size. Use the chart below to determine your cup size.

Difference (inches)Cup Size
5-6DD (E)
6-7DDD (F)
7-8DDDD (G)
8-9DDDDD (H)

For example, if your band size measurement is 34 inches and your bust size measurement is 36 inches, the difference is 2 inches, which equates to a B cup size.

Step 4: Try On Bras

Now that you know your bra size, it’s time to try on some bras. Keep in mind that different brands and styles may fit differently, so you may need to try on several bras to find the perfect fit.

When trying on bras, start with your band size and work from there. If the band feels too loose or too tight, try a different band size. Next, try different cup sizes until you find the one that fits best. You should be able to comfortably fit two fingers between the band and your skin, and the cups should not gap or bulge.


Q: Can I measure my bra size at home? A: Yes, you can measure your bra size at home using a measuring tape.

Q: Do I need to measure my bra size every time I buy a bra? A: Your bra size may change over time due to weight fluctuations or other factors. It’s a good idea to measure your bra size periodically to ensure the best fit.

Q: What should I do if I’m between sizes? A: If you’re between sizes, try both sizes to see which one fits best. You may also need to consider the style of the bra and the material it’s made from.

Q: Can I wear the same bra size in all brands? A: Different brands may have slightly different sizing, so you may need to try on different sizes in different brands to find the perfect fit.

Q: Is it okay if my bra size is different from what I always thought it was? A: Yes, it’s common for women to wear the wrong bra size. Wearing the right size can improve

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