Nursing Bra Size Calculator (UK)

To determine your UK nursing bra size, measure your band size (underbust) and bust size. Subtract the band size from the bust size to find your cup size. Combine the band and cup size to determine your nursing bra size. Keep in mind that sizes may vary between brands and styles, so it’s essential to try them on for the best fit.

Nursing Bra Size Calculator (UK)

Nursing Bra Size Calculator (UK)

Enter your measurements in inches:

Your Nursing Bra Size:

Certainly! Here’s a table to help you determine your nursing bra size in the UK based on your measurements:

Band Size (inches)Bust Size (inches)Cup SizeNursing Bra Size (UK)

Please note that these are approximate sizes, and it’s essential to try on bras to ensure the best fit, as sizes can vary between brands and styles.


How do I know my nursing bra size? To determine your nursing bra size, follow these steps:

  1. Measure Your Band Size: Use a measuring tape to measure around your ribcage, just under your bust. Round this measurement to the nearest even number.
  2. Measure Your Bust Size: Measure around the fullest part of your breasts.
  3. Calculate the Difference: Subtract your band size from your bust size. Each inch of difference corresponds to a cup size. For example, 1 inch difference is an A cup, 2 inches is a B cup, and so on.
  4. Calculate Your Nursing Bra Size: Combine your band size and cup size to determine your nursing bra size (e.g., 36C).

How many sizes do you go up when nursing? Estimation: You may go up 1 to 2 cup sizes and possibly need a larger band size when nursing, but this varies from person to person.

How do I know if my nursing bra is too small? If your nursing bra is too small, you may experience discomfort, spillage, or your breasts may not be properly supported. Signs include bulging over the cups, digging straps, and red marks on your skin.

How loose should a nursing bra be? A nursing bra should fit snugly around your ribcage but not be uncomfortably tight. It should provide support without causing discomfort or pressure.

Is a nursing bra the same as a normal bra? Nursing bras have additional features like drop-down cups or clips for easy breastfeeding access. They provide more support and convenience for nursing mothers compared to regular bras.

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Can I go braless while breastfeeding? While it’s possible to go braless, it’s generally not recommended due to the need for breast support and nipple coverage. Nursing bras offer convenience and support while allowing easy access for breastfeeding.

Should you wear a bra to bed when breastfeeding? It’s a personal preference. Some nursing mothers find it comfortable to wear a sleep bra for light support and to hold nursing pads in place. Others prefer to go braless at night.

When should I get fitted for a nursing bra? You can get fitted for a nursing bra during pregnancy, ideally in the third trimester, as your breasts may already be preparing for milk production.

How many pairs of nursing bras do I need? You may want 3-5 nursing bras to rotate through laundry and wear during the day, with an additional 1-2 sleep bras if desired.

Can a tight bra cause milk supply? Wearing a bra that is too tight or constricting may potentially cause discomfort and restrict milk flow, but it is unlikely to directly impact milk supply.

Does cup size change after breastfeeding? Cup size often changes during pregnancy and breastfeeding but may return to a pre-pregnancy size after weaning.

How do I get my nursing bra to hold the pump? You can purchase hands-free pumping bras or use clips to secure the flanges of your breast pump to the cups of your nursing bra.

How do I keep my nipples from sticking to my nursing bra? Use nursing pads made of breathable materials to prevent nipple stickiness and irritation. Change them regularly to keep your skin dry.

How many bra sizes to go up when pregnant? Estimation: During pregnancy, you may go up 1-2 band sizes and 1-2 cup sizes to accommodate breast changes.

Can you turn any bra into a nursing bra? It’s possible to convert some regular bras into nursing bras using nursing clips or hooks, but not all bras are suitable for this modification.

Can I use sports bras instead of nursing bras? You can use sports bras for nursing if they have a design that allows easy access for breastfeeding. Look for bras with front closures or adjustable straps.

Why do you have to wear a bra 24/7 when breastfeeding? Wearing a bra 24/7 is not necessary. Some women choose to wear bras for support and comfort, but it’s essential to allow your breasts some time without constriction to prevent discomfort.

How often do you wash nursing bras? Wash nursing bras every 1-3 wears, depending on how much you sweat and leak breast milk.

Why should you take your bra off at night? Taking your bra off at night allows your breasts to breathe, reduces the risk of irritation, and can improve overall comfort while sleeping.

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Should you clean breasts before feeding? You don’t need to clean your breasts before every feed. Washing with plain water when needed is usually sufficient.

How often do you change nursing pads? Change nursing pads whenever they become wet or after each feeding to maintain breast hygiene and prevent leakage.

Is 34D the same as 36C? No, they are not the same. A 34D has a smaller band size and larger cup size than a 36C. The cup size increases as you go up in band size.

How much do size D breasts weigh? The weight of breasts can vary significantly, but an estimation for size D breasts could be around 15-23 pounds (6.8-10.4 kilograms) for both breasts combined.

How do I know if I am a C cup? If your bust measurement is approximately 3 inches larger than your band measurement, you are roughly a C cup.

What is the 4 4 4 rule for breast milk? This rule suggests that breastfed babies typically feed every 4 hours, and each feeding lasts for about 40 minutes, with a gap of 4 minutes between letdowns.

How many nursing bras do you need per year? You may need 3-5 nursing bras in various styles and sizes to accommodate changes in your body during pregnancy, breastfeeding, and postpartum.

What size is a C cup? C cup size is typically associated with a difference of 3 inches between your band and bust measurements.

How many night nursing bras do I need? 1-2 night nursing bras should suffice for nighttime comfort and support.

What week should I buy a nursing bra? Consider buying a nursing bra in the third trimester, around weeks 28-32, as your breasts may have undergone significant changes by then.

How many nursing bras in the hospital bag? Pack at least one nursing bra in your hospital bag for convenience when breastfeeding after childbirth.

Do you always offer the second breast? You don’t have to offer the second breast at every feeding. It depends on your baby’s appetite and satisfaction. Some feedings may only require one breast.

Why are my breasts full but no milk when I pump? Fullness doesn’t always mean an immediate letdown of milk. Stress, improper pump fit, or pump settings may affect your ability to express milk effectively.

Does wearing a bra at night decrease milk supply? There’s no clear evidence that wearing a bra at night affects milk supply negatively. It’s more about personal comfort and preference.

Why do my breasts sag after pregnancy? Breast sagging can occur due to pregnancy-related changes like weight gain, hormonal fluctuations, and breastfeeding, as well as genetics and aging.

How much bigger will my breasts get when my milk comes in? Breast size can increase significantly after your milk comes in, potentially going up a cup size or more due to increased blood flow and milk production.

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Should I go up a cup size or band size? When adjusting your bra size, it’s common to go up in cup size to accommodate breast growth during pregnancy and breastfeeding. The band size may also need to increase.

What is a breast dent? A breast dent can be a temporary indentation or flattening of the breast, often due to tight clothing, an ill-fitting bra, or pressure.

Is DD bigger than D? Yes, DD is larger than D in terms of cup size. The cup size progression goes from A to B to C to D, and DD is one size larger than D.

How long are you supposed to pump for? Pumping time varies, but a typical pumping session may last about 15-20 minutes per breast. Adjust based on your comfort and milk output.

How do you hold your breast for a deep latch? To achieve a deep latch, use the C-hold technique by forming a C-shape with your thumb and fingers and gently compressing your breast tissue to help your baby latch deeply.

What to do if nipples show through a bra? Wearing nursing pads or choosing bras with thicker padding or lining can help prevent nipples from showing through.

Can nipples fall off during breastfeeding? Nipples do not fall off during breastfeeding. They are a permanent part of your body.

What should I wear to bed while breastfeeding? Wear comfortable, breathable sleepwear like nursing pajamas or a soft nursing tank top for easy access during nighttime feedings.

Do breasts get bigger or smaller after pregnancy? Breast changes can vary, but some women experience a decrease in breast size after pregnancy and breastfeeding, while others may see an increase.

Should I sleep in a bra while pregnant? Sleeping in a bra during pregnancy is a personal choice. It can provide support and comfort if you find it helpful.

When should I switch to a nursing bra? You can switch to a nursing bra in the third trimester or when you notice discomfort or changes in breast size, typically around weeks 28-32 of pregnancy.

Can I use a Bralette as a nursing bra? Some bralettes may work as nursing bras if they have easy access for breastfeeding and provide enough support and comfort. However, dedicated nursing bras are designed for this purpose and may be more convenient.

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