90 EU band sizes to US/UK band sizes

How to convert 90 EU to US/UK

US/UK = EU × 0.4 + 4

1. Take the value: 90 EU.
2. Multiply by 0.4: 90 × 0.4 = 36.
3. Add 4: 36 + 4 = 40.
4. So 90 EU = 40 US/UK.

Sizes come in steps of 2, so the nearest US/UK band size size is 40. 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.