Find your perfect UK bra size with our free UK Bra Size Calculator: input measurements in inches or cm for instant results, charts, sister sizes, conversions, and fit tips—ensure comfort and confidence!
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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