Calculate your US bra size accurately with our responsive calculator. Supports inches and cm, includes size chart, sister sizes, and fit tips for US brands.
Enter Your Measurements
Your Bra Size
Your bra size: 34C (US) (Example Result)
Conversions: EU: 75C, UK: 34C, India: 34C (Example Result)
Sister Sizes
32D, 36B (Example Result)
Recommended Bra Styles
Based on your size, try: T-shirt or demi bras for everyday comfort and versatility. (Example Result)
US Bra Size Chart
| Difference (inches/cm) | Cup Size |
|---|---|
| 0-1 / 0-2.5 | AA |
| 1-2 / 2.5-5 | A |
| 2-3 / 5-7.5 | B |
| 3-4 / 7.5-10 | C |
| 4-5 / 10-12.5 | D |
| 5-6 / 12.5-15 | DD/E |
| 6-7 / 15-17.5 | DDD/F |
| 7-8 / 17.5-20 | G |
Bra Size Conversion Table
| US/UK/India | EU |
|---|---|
| 28 | 60 |
| 30 | 65 |
| 32 | 70 |
| 34 | 75 |
| 36 | 80 |
| 38 | 85 |
| 40 | 90 |
| 42 | 95 |
| 44 | 100 |
| 46 | 105 |
| 48 | 110 |
| 50 | 115 |
Note: US sizing is used by most American brands. Cup sizes are generally consistent across regions, but band sizes vary.
How to Measure Your Bra Size (US Method)
- Measure your underbust: Wear a non-padded bra. Wrap a soft measuring tape snugly around your ribcage, just under your bust, keeping it level.
- Measure your bust: Wrap the tape loosely around the fullest part of your bust, ensuring it’s level and not too tight.
- Enter measurements above and click “Calculate”.
Tip: Use a mirror to ensure the tape is level, or ask a friend to help. Measure in inches for best compatibility with US brands.
Tips for Accurate Measurements
- Use a soft, flexible measuring tape and verify alignment in a mirror.
- Measure while standing upright with arms relaxed.
- Keep the tape snug for underbust and slightly loose for bust to avoid compression.
- Measure twice, ideally in a non-padded bra, to ensure accuracy.
Common US Bra Fit Issues
- Band too tight? Try a sister size with a larger band (e.g., 34C to 36B). Some US brands have stretchy bands.
- Cup spillage? Go up a cup size, as some brands may run small for cups D and above.
- Straps slipping? Adjust straps or try a racerback or multiway bra.
- Underwire poking? Check band size or opt for a wirefree 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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