Quick answer: what “US bra size” means
US bra sizing combines a band number and cup label, but cup lettering does not always match UK naming after DD. That is why measurement-based calculation is safer than picking by familiar label alone.
US sizing guide
US bra size calculator guide
This guide is for US shoppers who want clarity on sizing labels before calculating. Use it to understand US sizing, then calculate with US defaults in one step.
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US sizing notes
- US sizing often uses D, DD, DDD/F progression, while UK labels commonly use D, DD, E, F.
- Band numbers are usually aligned, but cup labeling can differ by region and brand.
- When shopping across regions, use your measured size as the anchor and compare label systems carefully.
US to UK cup label examples
Quick reference only. Exact naming can still vary by brand.
| US label | Common UK label |
|---|---|
| US 34D | UK 34D |
| US 34DD | UK 34DD |
| US 34DDD/F | UK 34E |
| US 34G | UK 34F |
Related measurement help
Most US fitting issues start with measurement inconsistency. Re-check your tape method if your first result feels off.
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