A 350cc breast augmentation adds 350 cubic centimetres of volume per side, a common middle choice. How big it looks depends on your height, chest width, existing breast tissue, skin stretch, implant profile and pocket. The same 350cc implant can look subtle on one person and full on another, so cc alone can’t predict a cup size.
This guide is part of our breast augmentation overview. It explains how implant sizes behave, not what size you should choose; that needs measurements.
How cc translates to cup size (table)
There’s no fixed conversion: cup letters vary by bra brand, while cc is a fixed volume whose effect depends on your body.
An American Society of Plastic Surgeons (ASPS, US) surgeon blog explains that implants are measured in cc because no uniform standard links a cup letter to a volume. Asking for a “32C breast augmentation” therefore means different things on different chests. These are the factors that decide how a given cc looks:
| Factor | Effect on how an implant looks |
|---|---|
| Chest width and height | The same volume looks smaller on a wide or tall frame |
| Existing breast tissue | More of your own tissue means a larger total result |
| Breast base width | Sets the implant diameter that fits without crowding |
| Implant profile | Higher profile projects more from the chest for the same width |
| Skin stretch | Tight skin limits size; looser skin may need a lift |
| Pocket placement | Under the muscle gives more upper coverage; above can look rounder |
A 2016 systematic review in Plastic and Reconstructive Surgery found the highest-quality studies all measured breast dimensions before choosing an implant. Tissue-based planning was linked with low reoperation rates, and the authors suggested measuring should be standard practice.
250–300cc results
Implants around 250 to 300cc usually give a natural, modest change, popular with slim or petite frames and people wanting proportion.
For a slim, narrow chest, a 250 cc breast augmentation or a 275cc breast augmentation can give a visible but understated increase. With a broad chest or more existing tissue, the same volume can look subtle. One ASPS surgeon notes that smaller, lighter implants may take longer to drop and soften, since heavier implants get more help from gravity.
350cc results
A 350cc breast augmentation is a middle-range choice that looks moderate on average frames and fuller on petite ones.
Profile changes the result a lot at this size. A low or moderate profile spreads 350cc across a wider base for a softer shape, while a high profile pushes the same volume forward. When you look at before-and-after photos, compare people with a similar height, chest width and starting size, and check that the photos were taken months after surgery.
500–600cc results
A 550 cc or 600 cc breast augmentation gives a clearly augmented look and puts more strain on skin and tissue over time.
Larger implants need a wide enough chest and enough tissue to cover them. Without that coverage, edges and rippling can be more visible, and weight adds to stretching over the years. The US Food and Drug Administration (FDA) lists visibility, palpability, wrinkling and rippling, malposition and ptosis (sagging) among local complications that occur in at least 1% of implant patients. If you want a large size, ask your surgeon how your tissue will hold up in 10 years.
Choosing a modest size
A modest breast augmentation sized to your measurements tends to look natural and leaves more options for later surgery.
- Get measured. Ask for base width, tissue thickness and skin stretch to be measured.
- Try before you decide. ASPS mentions 3D imaging and sizers; rice-filled sizers are less accurate but a start.
- Bring goal photos of people with a similar body type.
- Wait for the final shape. Implants settle over about three to six months, according to an ASPS surgeon blog; see our breast augmentation recovery timeline.
Patients sometimes ask me to pick a number for them. I prefer to give a range that fits their measurements and let them choose within it after trying sizers. For more questions to take to your consultation, see our breast augmentation preparation guide.
Frequently Asked Questions
FAQ
Answers on cup sizes, how big 350cc looks, regretting the size and choosing between 300cc and 400cc.
What cup size is 350cc?
There isn’t a fixed answer. Cup sizes aren’t standardised across bra brands, and how 350cc looks depends on your chest width, height, existing tissue and implant profile. Your surgeon can show the likely result with sizers or 3D imaging.
Is 350cc a big implant?
It’s a middle-range volume. On a petite, narrow frame it can look full, while on a wider or taller frame it often looks moderate. The implant’s base width and profile change the effect as much as the volume itself.
What if I regret my implant size?
Size can be changed with an implant exchange, which is another operation with its own costs and risks. Wait until implants have settled, about three to six months, before judging. Measuring and trying sizers before surgery lowers the chance of regret.
How do I choose between 300cc and 400cc?
Start from your measurements, especially breast base width and tissue coverage, then try both sizes with sizers in a fitted bra. Look at photos of people with your body type, and ask which size your tissue can support long term.
If you’d like your chest measured and sizes compared, you can book a consultation with Metropole Clinic by ABmedi. For implant types, costs and risks, see our breast augmentation guide.
This article is for general education and does not replace a personal medical consultation.
References
Show sources
- Kolder D. Can 3D imaging help you pick breast implants? ASPS blog. 2018. plasticsurgery.org
- Matching the implant to the breast: evidence on implant size selection systems reviewed (Adams & McKee, PRS 2016). American Society of Plastic Surgeons (ASPS, US). 2016. plasticsurgery.org
- Mariotti ER. What does “drop and fluff” mean after breast augmentation? ASPS blog. 2022. plasticsurgery.org
- Risks and complications of breast implants. U.S. Food and Drug Administration (FDA). Accessed 2026. fda.gov
- Breast augmentation: types of implants. American Society of Plastic Surgeons (ASPS, US). Accessed 2026. plasticsurgery.org
