Bra Size Calculator
Health & FitnessEstimate US band and cup from underbust and bust measurements.
Calculated Result
32D
Band 32 · cup D
Formula: Even band · cup from bust − band
About this calculator
Measure the ribcage snug and the fullest bust. Band is rounded to an even inch. Cup steps are about one inch each. Brands vary; try the size on.
How It Works & Formula
FormulaBand = underbust rounded · cup from bust − band inches
Band = even-rounded underbust. Cup index ≈ round(bust − band) on AA…I.
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