Breast Implant Size Calculator
Educational CC to cup size conversion tool
Important Medical Disclaimer
This is an educational tool only for understanding volume measurements. It provides approximate estimates based on general guidelines. Actual results vary based on individual anatomy, implant type, placement, and surgeon technique. Always consult with a board-certified plastic surgeon for medical advice.
Common sizes: 200-400 CC (average), 400-600 CC (larger), 600+ CC (extra large)
Select your approximate current bra cup size for estimation
Approximate Size Estimation
Volume Information
Cubic centimeters per implant
Approximate Cup Size Change
Approximately 1-1.5 cup sizes increase
Volume Comparison Reference
*Comparisons are approximate for educational purposes
Important Notes About Sizing
- These are approximate estimates only
- Actual results vary based on individual chest wall, breast tissue, and anatomy
- Implant profile (low, moderate, high) affects appearance differently
- Surgeon technique and placement impact final size
- Always consult with a medical professional for accurate assessment
Common Implant Size Conversions
| Implant CC Volume | Fluid Ounces | Milliliters | Approx. Cup Increase* | Common Use |
|---|---|---|---|---|
| 150 CC | 5.1 fl oz | 150 ml | ½ – ¾ cup | Very modest augmentation |
| 250 CC | 8.5 fl oz | 250 ml | 1 cup | Moderate augmentation |
| 350 CC | 11.8 fl oz | 350 ml | 1 – 1.5 cups | Average augmentation |
| 450 CC | 15.2 fl oz | 450 ml | 1.5 – 2 cups | Full augmentation |
| 550 CC | 18.6 fl oz | 550 ml | 2 – 2.5 cups | Large augmentation |
| 650 CC | 22.0 fl oz | 650 ml | 2.5 – 3 cups | Extra large augmentation |
*Starting from approximately a B cup. Results vary significantly based on individual factors.
How the Breast Implant Size Calculator Works
This educational tool converts breast implant CC (cubic centimeter) volume to approximate cup size changes. It uses general guidelines that plastic surgeons reference when discussing potential outcomes with patients.
The Basic Conversion Principle:
Approximately 150-200 CC of volume increase ≈ 1 cup size change
However, this varies based on starting size, chest width, tissue characteristics, and implant type.
The calculation starts with your selected CC volume. It then estimates how that volume might translate to cup size changes based on general surgical guidelines. The tool also converts CC to other volume measurements (fluid ounces, milliliters) for better understanding of the actual volume involved.
Understanding CC Volume Measurements
Cubic Centimeters (CC): This is the standard measurement for breast implants worldwide. One CC equals one milliliter (ml). Implants typically range from 100 CC (very small) to 800+ CC (very large), with most common sizes between 200-500 CC.
Why CC Matters: The CC number represents the actual volume of the implant. A 300 CC implant contains 300 cubic centimeters of filler material (silicone gel or saline). This is a precise measurement that doesn’t account for how the implant will look on an individual body, which depends on many other factors.
Volume vs. Appearance: The same CC implant can look very different on two people. A 300 CC implant might create a full C cup on someone with a narrow chest and little natural tissue, but only a small B cup on someone with a wide chest wall and more existing tissue.
Important Understanding: Cup sizes (A, B, C, D, etc.) are not standardized measurements. They vary between bra brands, countries, and even within the same brand over time. The cup size estimates provided here are approximate references based on general surgical guidelines, not precise predictions.
Critical Factors Affecting Implant Size Results
Many factors influence how a specific CC volume will appear on an individual. These variables explain why two people with the same CC implants can have dramatically different results.
Chest Wall and Rib Cage Width
The width of your chest (measured between your breast bones) significantly affects how implants appear. Wider chests distribute implant volume over a larger area, often requiring more CC to achieve the same fullness as someone with a narrower chest. This is why surgeons measure chest width during consultations.
Existing Breast Tissue
The amount and quality of natural breast tissue you have affects the final result. Someone with more existing tissue may need fewer CC to achieve a desired size increase compared to someone with very little natural tissue. Tissue characteristics (dense vs. fatty) also impact how implants feel and settle.
Implant Profile and Shape
Implant profile refers to how much the implant projects forward from the chest wall. Low profile implants spread volume wider with less projection. High profile implants have narrower bases with more forward projection. The same CC volume can look very different in different profiles.
Placement Position
Implants placed under the muscle (submuscular) often appear slightly smaller than the same CC volume placed over the muscle (subglandular). This is because muscle compression slightly flattens the implant. Surgeons consider this when selecting implant size.
Country-Specific Measurement Systems
United States
In the USA, implants are measured in CC (cubic centimeters), which is the international standard. However, patients often think in terms of cup sizes. American bra sizing is particularly inconsistent, with many brands using different measurement systems. Surgeons typically use CC for precision and provide cup size estimates as general guidelines.
United Kingdom
The UK also uses CC measurements for implants. UK bra sizing is somewhat more consistent than US sizing, with DD representing E cup, DDD representing F cup, etc. However, the same variability exists in how different brands measure cup sizes.
Canada and Australia
Both Canada and Australia use the CC system for implants. These countries typically use metric measurements for most things, so CC is a natural fit. Australian bra sizing generally follows the UK system, while Canadian sizing varies between UK and US systems depending on the brand.
Medical Disclaimer Reinforcement: This calculator provides educational estimates only. Actual surgical outcomes depend on individual anatomy, surgeon skill, implant type, surgical technique, and healing factors. Only a board-certified plastic surgeon can provide accurate size recommendations based on physical examination and professional experience.
The Consultation Process with Surgeons
How Surgeons Determine Size
Qualified plastic surgeons use multiple methods to help patients choose appropriate implant sizes:
- Physical measurements: Chest width, breast base diameter, tissue thickness
- Implant sizing: Trying different implant sizers in a surgical bra
- Visual aids: Reviewing before/after photos of similar body types
- 3D imaging: Some practices use Vectra or other 3D simulation technology
- Tissue-based planning: Considering tissue characteristics and limitations
The “Rice Test” and Other Home Methods
Many patients try home methods to visualize potential sizes. The “rice test” involves filling stockings with rice to approximate implant volume and placing them in a bra. While this can give a rough idea, it doesn’t account for how implants will actually sit on your chest, feel, or move. These methods are for general visualization only.
Why Surgeon Consultation is Essential
Surgeons consider factors you can’t assess at home: tissue quality, chest wall anatomy, symmetry issues, and surgical constraints. They also understand how different implant types (silicone vs. saline, round vs. anatomical) behave differently in the body.
Different Types of Breast Implants
Silicone Gel Implants
Silicone implants contain a cohesive gel that feels similar to natural breast tissue. They come pre-filled from the manufacturer in specific CC sizes. Silicone implants generally have a more natural feel but require MRI monitoring for silent rupture detection.
Saline Implants
Saline implants are filled with sterile saltwater during surgery. This allows for slight size adjustments during the procedure. Saline implants can feel firmer than silicone and may show more rippling, especially in patients with thin tissue.
Implant Shapes: Round vs. Anatomical
Round implants are equally full in all areas and can rotate without affecting appearance. Anatomical (teardrop) implants have more volume at the bottom for a natural slope. The shape choice affects how the CC volume is distributed and thus the final appearance.
Implant Profiles
Profile refers to how much the implant projects from the chest wall relative to its base width:
- Low profile: Wide base, minimal projection
- Moderate profile: Balanced width and projection (most common)
- High profile: Narrower base, more forward projection
- Extra high profile: Even narrower base with maximum projection
Practical Advice: During consultations, focus on how you want to look and feel rather than specific CC numbers. Bring photos of desired outcomes (respecting privacy and appropriateness). Trust your surgeon’s experience with what works for your specific anatomy and goals.
Frequently Asked Questions
How many CC equals a cup size?
There’s no fixed conversion because cup sizes aren’t standardized. Generally, 150-200 CC might approximate one cup size increase for someone starting around a B cup. However, this varies dramatically based on the factors discussed earlier. The first 200 CC typically creates more noticeable change than subsequent 200 CC increments due to tissue expansion limits.
Why do surgeons use CC instead of cup sizes?
CC is a precise, standardized measurement. Cup sizes vary between brands, change with weight fluctuations, and mean different things to different people. CC allows exact communication between surgeons, manufacturers, and surgical teams. It’s the only measurement that ensures consistency.
Can I go from an A cup to a D cup with implants?
This depends on your anatomy. Someone with an A cup and wide chest might need 500+ CC to reach a D cup, while someone with a narrow chest might achieve it with 350-400 CC. More importantly, surgeons consider tissue limitations – going too large too quickly can cause complications like bottoming out, stretching, or visible rippling.
Do implants feel heavy?
Implants add weight to your chest. A 300 CC silicone implant weighs approximately 0.66 lbs (300 grams), while saline weighs slightly more. A pair of 300 CC implants adds about 1.3 lbs total. Most women adjust to this weight quickly, but those with back issues or very small frames might feel it more.
How long do implants last?
Breast implants are not lifetime devices. The FDA recommends monitoring with the understanding that most women will need additional surgery at some point. Modern implants are more durable than earlier generations, but rupture rates increase over time. Regular monitoring and follow-up with your surgeon are important.
Can I breastfeed with implants?
Many women successfully breastfeed with implants, especially when implants are placed under the muscle or through certain incision locations. However, any breast surgery can potentially affect milk production or delivery. Discuss breastfeeding plans with your surgeon during consultation.
Final Important Note: This educational tool is for general information only. It cannot replace professional medical advice. Breast augmentation is a serious surgical procedure with risks including capsular contracture, implant rupture, infection, changes in sensation, and the need for future surgeries. Always consult with multiple board-certified plastic surgeons before making decisions.
Volume Comparison Examples
Example 1: 250 CC is approximately 8.5 fluid ounces. This is slightly less than a standard soda can (12 fl oz). For someone starting as a B cup, this might create approximately a full C cup, depending on other factors.
Example 2: 350 CC is approximately 11.8 fluid ounces, similar to many energy drink cans. From a B cup starting point, this might result in approximately a C/D cup range.
Example 3: 450 CC is approximately 15.2 fluid ounces, similar to a plastic water bottle. From a B cup, this might create approximately a D/DD cup result.
Example 4: 150 CC is approximately 5.1 fluid ounces, about half a soda can. This small volume might create about a half to three-quarter cup size increase from a B cup, often used for very modest augmentation or asymmetry correction.
Medical Consultation Required: These examples are for educational visualization only. Actual surgical planning requires physical examination by a qualified plastic surgeon who can assess your unique anatomy, discuss your goals, explain risks and benefits, and recommend appropriate options based on their professional expertise.