UK Bra Size Calculator
Find Your Perfect Fit in Seconds 👙 | UK, US & EU Sizing | Sports Bra | Sister Size | Push-Up Bra
📏 Standard UK Bra Size Calculator
📊 UK Bra Size Chart (Band & Cup Guide)
| Band (inches) | UK Band | EU Band | AA | A | B | C | D | DD | E | F | FF | G | GG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 28-29 | 28 | 60 | 28AA | 28A | 28B | 28C | 28D | 28DD | 28E | 28F | 28FF | 28G | 28GG |
| 30-31 | 30 | 65 | 30AA | 30A | 30B | 30C | 30D | 30DD | 30E | 30F | 30FF | 30G | 30GG |
| 32-33 | 32 | 70 | 32AA | 32A | 32B | 32C | 32D | 32DD | 32E | 32F | 32FF | 32G | 32GG |
| 34-35 | 34 | 75 | 34AA | 34A | 34B | 34C | 34D | 34DD | 34E | 34F | 34FF | 34G | 34GG |
| 36-37 | 36 | 80 | 36AA | 36A | 36B | 36C | 36D | 36DD | 36E | 36F | 36FF | 36G | 36GG |
| 38-39 | 38 | 85 | 38AA | 38A | 38B | 38C | 38D | 38DD | 38E | 38F | 38FF | 38G | 38GG |
| 40-41 | 40 | 90 | 40AA | 40A | 40B | 40C | 40D | 40DD | 40E | 40F | 40FF | 40G | 40GG |
| 42-43 | 42 | 95 | 42AA | 42A | 42B | 42C | 42D | 42DD | 42E | 42F | 42FF | 42G | 42GG |
| 44-45 | 44 | 100 | 44AA | 44A | 44B | 44C | 44D | 44DD | 44E | 44F | 44FF | 44G | 44GG |
| 46-47 | 46 | 105 | 46AA | 46A | 46B | 46C | 46D | 46DD | 46E | 46F | 46FF | 46G | 46GG |
💡 UK Sizing Note: UK and US sizes are the same up to DD. After DD, UK uses E, F, FF, G, GG while US uses DDD, F, G, H, I.
What is the UK Bra Size Calculator?
The UK Bra Size Calculator uses the industry-standard band + cup method to find your perfect fit. Simply measure your underbust (band) and bust (fullest part) to get accurate UK, US, and EU sizing. This tool supports plus sizes (38-54 band, D-JJ cup), sports bras, sister sizes, and push-up bras.
How to Measure for UK Bra Size
- Measure Underbust: Wrap the tape snugly around your ribcage, directly under your bust. Round to nearest inch.
- Measure Bust: Measure the fullest part of your chest. Don't pull too tight.
- Calculate: Cup size = Bust - Underbust (1 inch = 1 cup). Band = underbust rounded up (add 2 if underbust is odd).
Frequently Asked Questions
What is the difference between UK and US bra sizes?
UK and US sizes are identical up to DD cup. After DD, UK uses E, F, FF, G, GG while US uses DDD, F, G, H, I. Use our chart above for conversion.
What is a bra sister size?
Sister sizes have the same cup volume but different band sizes (e.g., 34C = 32D = 36B). Use our sister size calculator to find alternate fits.
How do I measure for a plus size bra?
Same method applies! For band sizes 38-54 and cups D-JJ, our plus size calculator gives accurate UK sizing. Always look for brands specializing in full-bust fits.
Does sports bra sizing differ from regular bras?
Yes — sports bras typically fit tighter for support. For high-impact activities, consider sizing up in the band or using compression + encapsulation styles.
What push-up bra size should I get?
With heavy padding, go up 1-2 cup sizes from your regular size. Our push-up calculator does this automatically.