Bra Size Calculator
Calculate your bra size (band and cup) for US, UK, EU, and FR systems. Enter your underbust and bust measurements below.
Result
Bra Sizing Tips
How to Measure
Use a soft tape. Measure underbust snugly for band, and around fullest bust for cup. Don't pull too tight.
International Sizes
US/UK use inches, EU/FR use cm. EU band = US+15, FR band = EU+15. Cup letters may differ by region.
Fit Matters
A good fit is snug but not tight. The band should be level, and cups should fully contain the bust.