What Breast Implant Size Is Right for You?
Get a research-informed estimate of additional volume per breast, then explore nearby Oumènta wearable sizer options. Results are educational estimates, not surgical recommendations.
How Does Our Breast Implant Size Calculator Work?
Enter your current bra band size, current cup size, and desired cup size. The calculator counts the number of cup-size steps between your current and goal sizes, then applies a broad estimate of approximately 130–150cc of additional volume per cup-size step. The result is an estimated range per breast—not a prescription for implant size.
For example, a two-step change produces an estimated range of 260–300cc per breast. We then suggest nearby Oumènta wearable breast implant sizer kits to help you explore the appearance of different volumes under clothing.
Band size helps guide the suggested Pocket Bra size; it does not change the estimated cc calculation. Your anatomy, existing breast tissue, implant dimensions, and bra brand all affect real-world outcomes. See the detailed calculation explanation in your results after using the calculator.
Calculating Your Personalized Size Range…
Matching your goals with Oumènta sizer options
Your Breast Implant Size Estimate
Choose Your Breast Implant Sizers
Compare different volumes in your everyday clothing.
2-Pack
3-Pack
How we calculated this
How we calculated this
Published research found substantial individual variability in the relationship between implant volume and reported bra cup-size change. Bra sizing is also inconsistent between manufacturers. Your anatomy, existing breast tissue, and implant dimensions affect surgical outcomes.
Research: King et al. (2017), What Is the Standard Volume to Increase a Cup Size for Breast Augmentation Surgery?
Band-size note: Band size is shown in your summary, but this calculator does not apply an unverified band-specific correction. The 130–150cc guideline is a broad approximation.
Breast Implant Sizing: What to Know Before You Choose
Breast Implant CC Sizes vs. Bra Cup Sizes
Breast implant volume is measured in cubic centimeters (cc). Bra cup sizes are not standardized measures of breast volume, and a cup letter means different things across band sizes and bra brands. There is no reliable formula that converts a specific implant volume into a guaranteed cup size.
When comparing 250cc, 300cc, 350cc, 400cc, or 450cc, remember that the visible result depends on your starting breast tissue, chest width, body proportions, implant profile, and surgical placement. Think of a cc estimate as a starting point for a conversation, not a final answer.
Explore our Breast Implant Sizing Guide for more comparisons and practical explanations.
How Accurate Is a Breast Implant Size Calculator?
This calculator is an educational planning tool. It uses the number of desired cup-size steps and a broad 130–150cc-per-step approximation to suggest volumes worth exploring. It cannot measure your breast tissue, predict a surgical result, or determine which implant is medically appropriate for you.
Published research has found substantial individual variation in the volume associated with reported cup-size changes. For background, see King et al. (2017), What Is the Standard Volume to Increase a Cup Size for Breast Augmentation Surgery? The study does not establish a guaranteed conversion for an individual.
Why Try Breast Implant Sizers at Home?
Numbers alone can be hard to visualize. Oumènta's external wearable sizers let you experience different volumes with a Pocket Bra, look in the mirror, and compare your silhouette in everyday clothing before discussing your preferences with a surgeon.
Our 2-Packs include two pairs of sizers, while 3-Packs include three pairs for a broader comparison. Wearable sizers help you explore look and feel; they do not reproduce the appearance or sensation of surgically placed implants.
Important Limitations and Medical Disclosure
Oumènta sizers are external apparel products, not medical devices. The calculator and sizers provide educational estimates and appearance comparisons only. They cannot diagnose a condition, establish a medically appropriate implant size, predict a postoperative cup size, or substitute for an examination and consultation with a qualified plastic surgeon.
Implant selection also involves anatomy, tissue characteristics, implant dimensions, surgical technique, and individual goals. Discuss the options, limitations, and risks of breast augmentation with your surgeon before making a surgical decision.
Email Privacy and Your Calculator Results
Providing an email address is optional. If you enter one, Oumènta will use it to send you a copy of your calculator results, not marketing emails. Your calculation is recorded in our private calculation history even if you do not provide an email address.
Oumènta provides educational sizing estimates. Your calculation is recorded in our private history. Results are emailed only if you provide an address. No marketing emails.