Bra Size Calculator & Conversion Chart: Measure Accurately (US/UK/EU/Asia)
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How to Use the Bra Size Calculator Method
Step 1: Measure Your Band Size
Wrap measuring tape snugly under bust (in inches/cm). Add 4 inches if even number, 5 if odd (US/UK method).
Pro Tip: Breathe normally and keep tape parallel to floor.
Step 2: Determine Cup Size
Measure fullest part of bust. Subtract band size from bust measurement:
- 1" difference = A cup
- 2" = B cup
- 3" = C cup
- Continue pattern (see detailed chart below)
Global Bra Size Conversion Tables
International Band Size Chart
| US/UK | EU | France | Japan | Australia |
|---|---|---|---|---|
| 28 | 60 | 75 | 63-67cm | 6 |
| 30 | 65 | 80 | 68-72cm | 8 |
| 32 | 70 | 85 | 73-77cm | 10 |
| 34 | 75 | 90 | 78-82cm | 12 |
| 36 | 80 | 95 | 83-87cm | 14 |
Global Cup Size Comparison
| US | UK | EU | Japan | Australia |
|---|---|---|---|---|
| A | A | A | A | A |
| B | B | B | B | B |
| C | C | C | C | C |
| D | D | D | D | D |
| DD/E | DD | E | E | DD |
Note: Asian sizes often use cm measurements directly (e.g., 75C = underbust 75cm, bust 90cm).
Professional Bra Fitting Tips
Sister Sizes Concept
If 34C feels tight, try:
- Band up: 36B
- Band down: 32D
Shape Considerations
- Shallow breasts: Try demi-cup bras
- Full bust: Opt for full-coverage styles
Bra Sizing FAQs
Why do bra sizes vary by brand?
Differences in manufacturing standards. Always check brand-specific sizing charts.
How to convert Asian bra sizes to US?
Use band measurements directly: 75cm band = EU 75/US 34.
