Advanced Bra Size Calculator

Enter six measurements for a more personalized starting size.

Underbust measurements

Used to estimate the band size and ribcage compression.

Relaxed tape under the bust.

in

Tape should be snug but comfortable.

in

Pull the tape as tight as comfortable.

in

Bust measurements

Used to understand bust volume across different positions.

Stand straight and measure the fullest part.

in

Bend over and measure the fullest part.

in

Lie down and measure the fullest part.

in

Your measurements are private and not saved.

Independent, not affiliated

This page uses a six-measurement fitting approach similar to methods popularized by online bra fitting communities. It is not the official ABraThatFits calculator and should not be presented as one.

FAQ

Calculator alternative questions

Is this the official ABraThatFits calculator?

No. This is an independent calculator alternative. It is not affiliated with, endorsed by, or copied from ABraThatFits.

Why does this page ask for six measurements?

Six measurements can give a better fitting starting point because breast tissue and ribcage shape can change depending on posture and tape tension.

Will this calculate my size now?

Yes. The form submits your six measurements to the advanced calculator flow and opens your advanced results page.