Bra Size Calculator

Use this free bra size calculator to estimate your bra band and cup size from inch measurements.

How the bra size calculator works

Band = underbust rounded to the nearest even number. Cup comes from bust minus band: 1″ = A, 2″ = B, 3″ = C, 4″ = D, 5″ = DD and so on.

Frequently asked questions

How do I measure?

Measure snugly under the bust for the band, and around the fullest part of the bust for the cup, with a soft tape.

Results are estimates for general information only. They are not a substitute for professional advice where applicable. Found a mistake? Report an error.