Find your accurate US bra size with our free US Bra Size Calculator: input measurements in inches or cm for instant results, charts, sister sizes, conversions, and fit tips—perfect for comfortable shopping!
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.
➤ Related Calculator