International conversions Nov 26, 2026 4 min read
Bikini Size Conversion (Across Regions)
Bikini tops can use bra sizing (32B, 34C) or letter (S/M/L). Bottoms can use letter or hip-numeric. Brazilian bikinis use BR 36-46 numeric for both pieces.
The Chart
| US | UK | EU | AU | Brazil |
|---|---|---|---|---|
| XS / 0-2 | 6 | 32 | 6 | 36 |
| S / 4-6 | 8-10 | 34-36 | 8-10 | 38 |
| M / 8-10 | 12 | 38-40 | 12 | 40-42 |
| L / 12-14 | 14-16 | 42-44 | 14-16 | 44 |
| XL / 16 | 18 | 46 | 18 | 46 |
| 2XL / 18 | 20 | 48 | 20 | 48 |
FAQs
Brazilian bikini bottom — runs smaller?
Yes, Brazilian-cut bottoms have less coverage AND run smaller dimensionally. A Brazilian 38 fits like US S/M. Most Brazilian beach brands have an 'international' size option that runs more like standard US.
Triangle vs balconette top sizing?
Triangle and bandeau use S/M/L because no underwire — flexible. Balconette and demi-cup use bra sizing (32C, 34D) because underwire requires precise fit.
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