Triumph Bra Size Calculator
UK Fitting Guide & EU Conversion
Triumph is a German lingerie brand with over 135 years of heritage. As a European brand, Triumph uses EU sizing — which differs from UK sizes. This guide explains exactly how to convert between Triumph's EU sizing and standard UK sizes.
Does Triumph Use UK or EU Sizing?
Triumph primarily uses European (EU) sizing. This means:
Band Sizes (EU)
EU bands are measured in centimetres: 70, 75, 80, 85, etc. These correspond to UK sizes 32, 34, 36, 38, etc.
Cup Sizes (EU)
EU cup letters run differently after C. UK DD = EU E, UK E = EU F, UK F = EU G, and so on. The double letters (DD, FF, GG) don't exist in EU sizing.
UK to Triumph EU Cup Conversion
| UK Cup | Triumph EU Cup |
|---|---|
| A | A |
| B | B |
| C | C |
| D | D |
| DD | E |
| E | F |
| F | G |
| FF | H |
| G | I |
| GG | J |
Example: If you are UK 34DD, your Triumph size is EU 75E.
Triumph Size Chart (UK Equivalent)
Below is Triumph's available size range with UK equivalents:
| EU Band | UK Band | UK Cup Sizes Available |
|---|---|---|
| 70 | 32 | 32A32B32C32D32DD32E32F |
| 75 | 34 | 34A34B34C34D34DD34E34F34FF34G |
| 80 | 36 | 36A36B36C36D36DD36E36F36FF36G36GG |
| 85 | 38 | 38B38C38D38DD38E38F38FF38G |
| 90 | 40 | 40B40C40D40DD40E40F |
| 95 | 42 | 42C42D42DD42E |
| 100 | 44 | 44C44D44DD |
Popular Triumph Collections in the UK
Triumph Sloggi
Comfort-focused everyday basics. Wire-free options, soft fabrics, and a relaxed fit. One of the UK's best-selling comfort bra ranges.
Triumph Body Make-Up
Seamless, invisible, and ultra-smooth. Designed to disappear under clothing. Available in a wide EU size range.
Triumph Doreen
A classic full-cup, non-wired bra. Known for excellent support and comfort. One of the most popular bras in Europe.
Triumph Amourette
Elegant lace bras with supportive fit. Combines European style with everyday comfort. Available in core and extended sizes.
Triumph Fitting Tips for UK Shoppers
Always convert your UK size to EU before ordering from Triumph — use our conversion table above.
Triumph bands tend to be true to size or slightly snug compared to UK brands. If you're between sizes, try the larger band.
Remember that EU cup sizes don't use double letters. UK DD = EU E, UK FF = EU H, etc.
If ordering online from Triumph UK, sizes are usually displayed with EU labels but UK equivalents are often shown alongside.
For the most accurate size, use our free calculator and then convert using the chart above.
Find your Triumph size now
Expert Triumph Sizing Audits
Every Triumph EU-to-UK size conversion and fitting recommendation is reviewed by certified professionals.
Eleanor Vance
Certified Bra Fitter & Lingerie Consultant
Over 12 years of professional fitting experience at leading UK lingerie retailers, including Bravissimo and Marks & Spencer. Specially certified in maternity, teen first-fit, and post-surgery supportive consultations.
Sizing Math & Rounding Logic
Our calculator implements the industry-standard **modern fitting method** rather than the obsolete "plus-4" retail formula. Band sizes are derived directly from snug ribcage measurements in inches (rounded to the nearest even number). Cup sizes are calculated using the precise 1-inch difference increments between fuller bust and underbust measurements (e.g. 4" = D, 5" = DD, 6" = E).
Sourced Claims & Studies
Medical and biomechanical research shows that up to **80% of UK women wear the wrong bra size**. According to breast health clinical research from the **University of Portsmouth (Department of Sport and Exercise Science)**, properly fitted encapsulation support reduces vertical breast movement by up to 59%, significantly preventing exercise-induced breast discomfort and cooper's ligament stretching.