Implant Size Calculator
Biodimensional planning estimate based on patient measurements & tissue characteristics
Patient Measurements
Chest Diameter (CD)
Horizontal chest width at nipple level (cm)
Base Width (BW)
Existing breast tissue width, medial to lateral (cm)
N–IMF Distance
Nipple to inframammary fold under stretch (cm)
Upper Pole Pinch (cm)
Tissue pinch thickness at upper pole
Patient Goals
Current Cup Size
Desired Cup Size
Tissue & Clinical Factors
Skin Elasticity
Preferred Outcome Look
—
Estimated implant volume range (cc)
Planning Summary
Implant Width—
Profile—
Placement—
Coverage—
N–IMF Note—
Elasticity—
Clinical Reference
CD−4 Width—
Vol. per cup~150–200 cc per cup size increase (varies with tissue & frame)
Pinch test—
N–IMF stretch—
MethodologyCD−4 theory (PMC4836252) + Tebbetts High Five tissue-based planning
This calculator provides an educational planning estimate only. It does not replace clinical assessment, physical sizing with sizers, or board-certified plastic surgeon consultation. Final implant selection must account for intraoperative findings, patient-specific anatomy, and shared decision-making. Always use manufacturer sizing guides alongside tissue-based planning methods.
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