Brand Size Converter
Compare a baseline bra size with the stated sizing system used by selected lingerie brands.
How the brand comparison works
The converter treats your entered size as a baseline US label and maps its cup position into the selected brand's stated sizing system. The band number is retained as the baseline comparison.
- Baseline: the selected US cup is located in BraSizePRO's canonical cup sequence.
- System mapping: that cup position is read against the selected brand's declared US or UK system.
- Brand note: the result does not model every style. Use the brand's current product chart for the specific garment before ordering.
Manufacturer sizing can vary even when labels match; research has documented measurable differences in cup volume between manufacturers. citeturn0search0
Frequently Asked Questions
Answers about sizing methods, measurements, and fit considerations.
Why do I wear different sizes in different brands?
Bra cup volume and fit can vary between manufacturers, even when the labeled size is the same. Use the converted label only as a reference and check the current product chart for the specific style.
Sizing References
- Comparative Technical Evaluation of Commercial Bra Patterns