85B Bra Size Conversion
Complete guide to converting EU 85B bra size to US, UK, Australian, and French sizing. Find your equivalent size, sister sizes, and measurement guide.
Sister Sizes for 85B
Same cup volume, different band fit:
Convert Any EU Size
International Equivalents
EU to US/UK Band:
85 → (85-10) ÷ 2.54 = 29.5 → rounds to 38 (adjusted for fit)
EU to AU Band:
38 - 22 = 16
EU to FR Band:
85 + 15 = 100
EU to IT Band:
(38 - 28) ÷ 2 = 5
Understanding EU 85B
Band Size: 85
EU band 85 means the underbust measures approximately 83-87 cm (32.7-34.3 inches). This converts to US/UK band 38.
Cup Size: B
B cup indicates a 14-16 cm (5.5-6.3 inch) difference between bust and underbust. B cup is consistent across EU, US, and UK systems.
Body Measurements
Underbust: ~85 cm (33.5")
Full Bust: ~99-101 cm (39-40")
Bust-Band Diff: ~14-16 cm
Common Fit Profile
EU 85B fits medium frames with average bust projection. Popular for comfortable everyday wear and smooth T-shirt bras.
Complete 85 Band Conversion Chart
| EU Size | US Size | UK Size | AU Size | FR Size |
|---|---|---|---|---|
| 85A | 38A | 38A | 16A | 100A |
| 85B | 38B | 38B | 16B | 100B |
| 85C | 38C | 38C | 16C | 100C |
| 85D | 38D | 38D | 16D | 100D |
| 85E | 38DD | 38DD | 16DD | 100E |
| 85F | 38DDD | 38E | 16E | 100F |
| 85G | 38G | 38F | 16F | 100G |
Shopping Tips for EU 85B
- When buying from US brands, look for 38B
- UK brands also use 38B - same as US for this size
- Australian brands: shop for size 16B
- French/Spanish brands: look for 100B
- If 38B feels tight, try sister size 40A; if loose, try 36C
- EU sizing is common in Germany, Netherlands, Belgium, and Scandinavian countries
Frequently Asked Questions
EU 85B equals US 38B. The EU band 85 converts to US band 38, and the B cup remains the same in both sizing systems. This is a straightforward conversion with no cup letter changes needed.
EU 85B equals UK 38B. UK and US band sizes are identical, and for B cup, there's no difference between UK and US/EU cup designations.
Sister sizes maintain the same cup volume: EU 80C (US 36C) has a tighter band with larger cup, and EU 90A (US 40A) has a looser band with smaller cup. Try these if your regular 85B doesn't fit perfectly.
EU 85B equals Australian 16B. Australian sizing uses dress-size numbers for bands. The formula is: AU = US - 22, so 38 - 22 = 16.
Yes, EU 85B (US 38B) is a commonly available size. It represents an underbust of about 85 cm (33.5") with a moderate bust, fitting medium to slightly larger frames comfortably.
Related Conversions
Official Resources
Created by OmniCalculator.space | Last Updated: January 2026