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  • 30 October 2023
  • Mr A. Siddiqui

Last updated on March 18, 2024

When it comes to breast augmentation with breast implants, there are many questions to ask to choose the right implant. However, there is one common question that we are asked all the time: how much do breast implants weigh, and will they make me heavier?

In this blog post, you will find all the answers (and more) with advice from Breast & Body Clinic’s surgeon.

How do we measure a breast implant?

It is important to understand that we measure a breast implant in cubic centimeters (cc) of implant volume, not by cup sizes. This is because bra sizes are notorious for being inaccurate, with big differences in cup sizes between stores.

The larger the cc, the larger the breast implant, with an estimated bra cup size being anywhere between 120cc to 140cc.

How do we measure a breast implant - Breast & Body Clinic

Plastic surgeons measure the shell volume of breast implants by cubic centimeters or ccs.

What types of implants are available and how much do breast implants weigh?

There are two main types of breast implants to choose from: silicone implants and saline implants. You may not notice any weight variation between the two types, but there is a small difference.

How much do silicone implants weigh?

Silicone breast implants are filled with a thick, silicone gel. Sometimes there can be a slight variation in silicone breast implant weight, based on who the manufacturer is. However, in general, every 100cc of silicone gel weighs 0.23lbs. This means, a 300cc silicone implant (one of the most popular sizes) will weigh 0.69 lbs, and a pair of silicone implants is 1.38 lbs.

How much do saline implants weigh?

A saline implant is filled with sterile salt water and for every 100cc of total volume, a saline implant weighs 0.21 lbs. This means a typical 300cc breast implant filled with saline weighs 0.63 lbs, with a pair of saline implants coming in at 1.26 lbs.

As you can see there is not much weight difference between saline and silicone implants. These weights are approximate and don’t take into account the weight of the implant shell (the outer shell).

What type of breast implant and implant size you choose for your breast augmentation comes down to personal preference and the advice of a board-certified plastic surgeon. Dr Siddiqui at Breast & Body Clinic will make recommendations based on your existing body shape and size and your goals for breast augmentation.

How much do saline implants weigh - Breast & Body Clinic

Saline implants and silicone implants have only a small difference in their weights.

Can breast augmentation cause me to gain extra weight?

It is common to gain a small amount of additional weight with a breast augmentation due to the weight of the breast implants. If you notice your overall weight gain is more than what the implant weighs, this could be due to several factors:

The good news is these are all easy to fix! The fluid retention and swelling will improve with time and as you heal, and after 4-6 weeks you can get back to regular life and exercise to rid yourself of those last few pounds.

Striking the perfect balance for you.

To strike the perfect balance for you it is important to choose the right size and shape breast implant for your body composition and expectations. There is little weight difference between saline and silicone implants, so it is going to come down to personal preference and the advice of your surgeon.


Read through frequently asked questions about implants and breast weight.

How much weight do breast implants add to your weight?

How much weight a breast implant adds to your weight depends on the implant size you choose for your breast augmentation. When you have your breast augmentation consultation, your surgeon can advise you about the weight.

How much does 1000 cc of breast tissue weigh?

1000cc of natural breast tissue weighs approximately 2.2 lbs. A silicone gel implant of 1000 cc weighs 2.3 lbs, and a saline implant is 2.1 lbs. Keep in mind these weights for implants do not take into account the implant shell, this is just the volume of fluid.

How much does 400 cc’s weigh?

400 cc’s of silicone gel is 0.92 lbs, and of saline, it is 0.84 lbs.

How many ccs is a full C-cup?

The Volume of cc’s and cup size is different, so answering how many ccs are in a full c-cup can be difficult. We estimate that one cup size is between 120cc to 140cc, therefore we can determine that a c-cup would be between 360cc and 420cc.

How many pounds do C-cup breasts weigh?

On average, a c-cup breast size weighs between 1.2 lbs and 4 lbs. The actual weight of your breast tissue can change with hormones, age, weight gain, and fitness.

How much do D-cup breasts weigh?

D-cup breast tissue has an average weight of 3.06 lbs or 1.53 lbs per breast. Whilst this is the average, some D-cup sizes breasts can weigh up to 6.7 lbs (or 3.35 lbs per breast).

How many pounds do E-cup breasts weigh?

E-cup-sized breasts weigh approximately 4.3 lbs on average, with each breast weighing about 2.15 lbs.

How much do F cups breasts weigh?

On average F-cup breasts weigh 5.14 lbs. These larger sizes are where some women may start to experience back, neck, and shoulder pain and may consider a breast reduction.

Read our blog to find out what the perfect breasts look like.

Mr A. Siddiqui
About The Author

Mr A. Siddiqui

Mr Siddiqui is a Consultant Plastic and Cosmetic Surgeon, based at The Countess of Chester Hospital in the Department of Plastic and Reconstructive Surgery. He trained extensively in plastic surgery before becoming a Consultant in the NHS and developing a private practice in Manchester and other areas of the Northwest. He is considered to be one of the top 10 cosmetic surgeons in Manchester.

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