Bra Size Converter
Convert bra sizes between US, UK, EU, French, Italian, Australian, and Japanese sizing systems.
Select a size in any system β the equivalents show instantly.
Bra sizes vary by country. Each system uses different band numbering and cup letter schemes.
Band size conversions:
| US/UK | EU | French | Italian | Japan |
|---|---|---|---|---|
| 30 | 65 | 80 | 0 | 65 |
| 32 | 70 | 85 | 1 | 70 |
| 34 | 75 | 90 | 2 | 75 |
| 36 | 80 | 95 | 3 | 80 |
| 38 | 85 | 100 | 4 | 85 |
| 40 | 90 | 105 | 5 | 90 |
| 42 | 95 | 110 | 6 | 95 |
| 44 | 100 | 115 | 7 | 100 |
Cup size conversions: US and UK cups diverge after D.
- US: A, B, C, D, DD, DDD/F, G, H, I, J
- UK: A, B, C, D, DD, E, F, FF, G, GG, H
- EU: A, B, C, D, E, F, G, H (same letter = same size as UK mostly)
How band sizes relate:
- EU band = US band Γ 2.54 (rounded to nearest 5)
- French band = EU band + 15
- Australian band = US band - 22 (sometimes differs)
Measurement method (both systems):
- Measure under the bust (band size).
- Measure around the fullest part (bust size).
- The difference determines the cup size.