28 US/UK band sizes to French band sizes

How to convert 28 US/UK to FR/ES/BE

FR/ES/BE = US/UK × 2.5 + 5

1. Take the value: 28 US/UK.
2. Multiply by 2.5: 28 × 2.5 = 70.
3. Add 5: 70 + 5 = 75.
4. So 28 US/UK = 75 FR/ES/BE.

Sizes come in steps of 5, so the nearest French band size size is 75. This converts the band (number) part of a bra size only. Cup letters also differ between systems (for example, US DDD is UK E), so check the brand's chart for cups.