Free online calculator

Breast Implant Size Calculator

Compare implant volume, base width and projection side by side for an informed plastic-surgery consultation.

Volume · Width · Projection

Breast implant size calculator

Compare two implant options in cc and millimetres so you can ask clearer questions during a qualified plastic-surgery consultation.

Neutral · Private · Educational
Planning aid—not a size recommendation

The same cc can look different because implant dimensions, profile, anatomy, tissue and placement all matter. Use manufacturer specifications and your surgeon’s measurements.

Enter product specifications
1
Optional revision baselineEnter a known current implant volume to compare proposed changes. Leave blank for first-time planning.
cc
Use the implant card or operative record when available.
A
Option ACopy exact dimensions from the manufacturer’s current product table.
cc
1 cc equals 1 mL of volume.
mm
Product width, not a self-measured fit decision.
mm
Forward projection listed by the manufacturer.
B
Option BCompare the same specification fields for a second implant option.
cc
Volume is compared per side and for the pair.
mm
A narrower implant at equal volume may project differently.
mm
Dimension names and measurements can vary by product line.
Compare specifications—not bodies

What does a breast implant size calculator do?

This calculator compares the numerical specifications of two implant options. It shows per-side volume, combined pair volume, absolute and percentage differences, and—when entered—differences in base width and projection.

It does not select an implant. Final planning requires a surgeon to consider anatomy, soft-tissue coverage, asymmetry, implant pocket, placement, incision, goals, device labeling and risks.

Calculation methodology

How implant option differences are calculated

01

Compare per-side volume

Option A is the baseline. The tool subtracts A from B, so a positive result means B has more volume.

per-side difference = B cc − A cc
02

Calculate pair volume

Each per-side volume is multiplied by two. This is a volume total, not a prediction of body weight or appearance.

pair total = per-side cc × 2
03

Find percentage difference

The cc difference is divided by Option A, making A the comparison baseline.

percentage = (B − A) ÷ A × 100
04

Compare dimensions separately

Base width and projection are subtracted independently because equal-volume implants can have different shapes and profiles.

dimension difference = B mm − A mm
Worked comparison

Comparing 325 cc and 375 cc implants

Suppose Option A is 325 cc and Option B is 375 cc per side. The comparison describes numerical differences only; it cannot predict which option looks or fits better.

  1. 1
    375 − 325 = +50 cc per sideOption B has 50 cc more volume per implant.
  2. 2
    +50 × 2 = +100 cc per pairThe two-implant volume total differs by 100 cc.
  3. 3
    50 ÷ 325 × 100 = 15.4%Option B has 15.4% more volume using A as baseline.
  4. 4
    Compare width and projectionCheck the exact product table; cc alone does not describe implant shape.
Why cc cannot predict cup size

Volume is only one part of implant sizing

Bra cup labels are not standardized, and the visible result of a given implant volume depends on starting anatomy, chest width, existing tissue, skin and tissue characteristics, implant profile, placement and other surgical decisions. A simple cc-to-cup conversion can therefore create false precision.

Volume (cc)

How much space the implant occupies. One cc equals one mL.

Base width

The product’s listed width across its base; it is not a stand-alone self-fitting rule.

Projection

How far the implant projects forward according to the manufacturer’s specifications.

Profile and shape

Equal-volume devices can distribute width and projection differently.

Prepare for a better consultation

How to use this comparison with a surgeon

  • Use exact product data. Copy current volume and dimensions from the manufacturer’s table, implant card or operative record.
  • Bring both options. Ask how each option relates to surgeon-measured anatomy and soft-tissue coverage.
  • Ask about trade-offs. Discuss placement, incision, implant surface, shape, profile, expected appearance and revision considerations.
  • Use physical or 3D sizing appropriately. Sizing systems may support discussion but still cannot guarantee a surgical result.
  • Review official labeling. Read the manufacturer’s patient materials, warnings, decision checklist and device-specific information.
  • Plan long-term follow-up. Ask about monitoring, symptoms that require review, future imaging and possible revision surgery.
Read safety information before deciding

Breast implant risks and informed consent

Breast implants are medical devices, not lifetime devices. The FDA advises that additional operations may be needed and describes complications including capsular contracture, reoperation, removal, rupture or deflation, wrinkling, asymmetry, scarring, pain and infection. Device labeling also addresses additional risks and monitoring.

In the United States, current breast implant labeling includes a boxed warning, patient decision checklist, device materials information and a patient device card. Read the current manufacturer labeling and discuss benefits, risks, alternatives and follow-up with the implanting physician.

FDA: Things to consider before breast implantsSafety, risks, labeling and long-term considerationsFDA breast implant information hubApproved-device information, labeling and safety updatesASPS: Breast implant profilesHow width and projection relate to profile
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Frequently asked questions

Breast implant size calculator FAQs

What does cc mean in breast implant sizing?

CC means cubic centimetres, a unit of volume. One cc equals one millilitre. It describes implant volume but does not by itself describe width, projection, shape, fit or appearance.

Can implant cc be converted to a bra cup size?

Not reliably. Bra sizing is not standardized, and appearance depends on starting anatomy, tissue, chest dimensions, implant profile, placement and other surgical factors. The calculator intentionally does not predict cup size.

Does a larger cc always mean more projection?

No. Equal or similar volumes can be distributed across different base widths and projections. Compare the exact dimensions and profile in the manufacturer’s current product specifications.

What is breast implant base width?

It is the width listed for the implant’s base. It is a product specification, not a self-fitting measurement. A surgeon must evaluate anatomy and the complete surgical plan.

What is implant projection?

Projection is the manufacturer-listed forward dimension of an implant. It is related to profile, but terminology and dimensions vary among product lines.

How does the percentage comparison work?

The tool subtracts Option A volume from Option B, divides the difference by Option A, and multiplies by 100. Option A is therefore the comparison baseline.

Can I compare a revision size with my current implant?

Yes. Enter the known current per-side volume from the implant card or operative record. The tool shows the cc increase or decrease to each option, but it cannot predict revision complexity or outcome.

Does pair volume mean implant weight?

No. Pair volume is simply both per-side volumes added together. The calculator does not estimate product weight; use the manufacturer’s specifications for device-specific information.

Can this calculator tell me which implant fits?

No. Fit and suitability require clinical examination, measurements, tissue assessment, review of goals and risks, and product-specific planning by a qualified plastic surgeon.

Are breast implants lifetime devices?

No. The FDA states that breast implants are not lifetime devices and that additional surgery may be needed. Review current labeling, risks and long-term monitoring with the implanting physician.

What information should I review before surgery?

Review the current manufacturer patient labeling, warnings, decision checklist, device materials, implant card information, risks, alternatives and follow-up plan with the physician.

Is my implant information stored?

No. The comparison runs in the browser and this plugin does not transmit or store the implant specifications entered into the tool.