Calculate your UK bra size accurately with our responsive calculator. Supports inches and cm, includes size chart, sister sizes, and fit tips for UK brands.
Enter Your Measurements
Your Bra Size
Your bra size: 34C (UK) (Example Result)
Conversions: US: 34C, EU: 75C, India: 34C (Example Result)
Sister Sizes
32D, 36B (Example Result)
Recommended Bra Styles
Based on your size, try: Balcony or plunge bras for everyday comfort and lift. (Example Result)
UK Bra Size Chart
| Difference (cm/inches) | Cup Size |
|---|---|
| 0-2.5 / 0-1 | AA |
| 2.5-5 / 1-2 | A |
| 5-7.5 / 2-3 | B |
| 7.5-10 / 3-4 | C |
| 10-12.5 / 4-5 | D |
| 12.5-15 / 5-6 | DD |
| 15-17.5 / 6-7 | E |
| 17.5-20 / 7-8 | F |
| 20-22.5 / 8-9 | FF |
| 22.5-25 / 9-10 | G |
Bra Size Conversion Table
| UK/India | US | EU |
|---|---|---|
| 28 | 28 | 60 |
| 30 | 30 | 65 |
| 32 | 32 | 70 |
| 34 | 34 | 75 |
| 36 | 36 | 80 |
| 38 | 38 | 85 |
| 40 | 40 | 90 |
| 42 | 42 | 95 |
| 44 | 44 | 100 |
| 46 | 46 | 105 |
| 48 | 48 | 110 |
| 50 | 50 | 115 |
Note: UK cup sizes (DD, E, F, FF, G) differ from US (DD/E, DDD/F, G) beyond D. Band sizes are consistent with US/India but differ from EU.
How to Measure Your Bra Size (UK Method)
- Measure your underbust: Wear a non-padded bra. Wrap a soft measuring tape snugly around your ribcage, just under your bust, while exhaling to get the tightest measurement.
- Measure your bust: Wrap the tape loosely around the fullest part of your bust, ensuring it’s level and not compressing the breasts.
- Enter measurements above and click “Calculate”.
Tip: Use a mirror to ensure the tape is level, or ask a friend to assist. Measure in cm for precision with UK brands.
Tips for Accurate Measurements
- Use a soft, flexible measuring tape and verify alignment in a mirror.
- Measure underbust while exhaling to ensure a snug fit, as UK bands are firmer.
- Keep the tape slightly loose for bust to avoid compression.
- Measure twice, ideally in a non-padded bra, to confirm accuracy.
Common UK Bra Fit Issues
- Band too tight? Try a sister size with a larger band (e.g., 34C to 36B). UK bands tend to be firmer.
- Cup gaps or spillage? Adjust cup size (e.g., 34C to 34D for spillage). UK cups may vary slightly by brand.
- Straps slipping? Tighten straps or try a balcony or racerback bra.
- Underwire discomfort? Check band size or opt for a soft-cup bra for comfort.
Privacy Note
Your measurements are not stored or shared. This calculator processes data locally in your browser for maximum privacy.
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