Independent fit tool

Six measurements · Eight sizing systems · Private in-browser calculation

Calculator limits

A Bra That Fits Calculator and Bra Fit Disclaimer

A numerical result can narrow the sizes to try, but it cannot guarantee comfort, support, health outcomes or compatibility with a specific bra.

The calculated bra size is a starting point

Body measurements are continuous while commercial sizes are discrete and inconsistently graded. Shape, asymmetry, tissue distribution, mobility, sensory needs and personal preference can all change the best practical fit.

This bra size calculator is not medical advice

The site does not diagnose breast, skin, rib, shoulder or back conditions. Persistent pain, a new lump, skin changes or other health concerns require evaluation by an appropriate healthcare professional.

Use brand charts and fit checks with every result

Verify the label system used by the brand, scoop and swoop, check that wires do not sit on tissue and assess the band independently. Stop wearing any item that causes pain, injury or breathing difficulty.