Bra Size Converter
Convert common bra band sizes between US/UK and EU systems.
How to Use the Bra Size Converter
This Bra Size Converter helps translate common US and UK band sizes into approximate EU band sizes. Enter the band size you normally wear and the tool estimates the corresponding European band measurement.
Practical Example
A US or UK band size of 34 typically corresponds to approximately EU 75. This gives shoppers a quick reference when comparing international size labels.
Factors That Affect Bra Size Conversion
Brand sizing, fabric stretch, bra style and measuring technique can all affect fit. Cup lettering also varies by region, so this converter focuses on band size and should be used together with the manufacturer’s size chart.
Frequently Asked Questions
Does this converter calculate cup size?
No. Cup lettering systems vary more between markets, so this tool focuses on band conversion.
How should I measure my band size?
Measure snugly around the rib cage directly under the bust while keeping the tape level.
Why can the same size fit differently across brands?
Manufacturers use different patterns, materials and grading rules, so small fit differences are normal.
Understanding Bra Size Conversion
Bra sizing differs between regional systems because band and cup labels are not mapped identically in every market. A conversion can help compare US, UK and EU labels, but the result should be treated as a close equivalent rather than a guarantee of identical fit. Cup volume also changes with band size, which is why sister sizes can sometimes fit similarly.
For better accuracy, measure the underbust firmly and the fullest part of the bust without compressing the tissue. Use those measurements as the starting point, then compare the converted size with the brand’s own fitting chart. Differences in cup shape, wire width, padding and fabric stretch can all affect comfort even when the nominal size matches.
Conversion Details and Practical Limits
Pressure conversions should preserve whether a value is absolute, gauge or differential pressure. Unit conversion alone cannot change the reference point, and similarly named units such as bar, psi and pascal may be used in very different operating contexts.