Accurate UK Bra Size Calculator – Measure Your British Bra Fit Online Today
Getting the right UK Bra Size is important. Many people wear the wrong size without knowing. This can lead to discomfort and confusion when shopping for new bras. A simple Bra Size Calculator can help you find your true fit at home.
Using our UK Bra Size Calculator, you start by measuring your under-bust and bust. These numbers help you know your correct Bra Size. Shopping becomes easier, and you feel more comfortable every day.
Try our easy-to-use Bra Size Calculator below to get started!
🇬🇧 UK Bra Size Calculator
Enter your measurements below to find your UK bra size.
🎯 Your UK Bra Size
How to Use the Bra Size Calculator
Follow these simple steps:
- Measure under your bust:
Wrap a tape measure right under your breasts and around your body. Write down the number in centimeters or inches. - Measure around your bust:
Place the tape over the fullest part of your chest. Make sure it is not too tight or too loose. Write down this number. - Enter your numbers:
Put your measurements into the calculator. - Click “Calculate”:
See your perfect bra size in seconds.
Some UK brands such as Marks and Spencer and Bravissimo use this same measuring method.
Tip:
Use a mirror or ask someone to help you for the most accurate measurements.
How UK Bra Size Works
UK Bra Size uses a number and a letter. The number comes from your underbust measurement. The letter is your cup size and it comes from the difference between your bust and underbust. Cup sizes move up as the difference gets bigger. In the UK sizes like DD FF and GG are common.
Other countries have different sizing. Always check before buying. You can use our Bra Size Converter to see your Bra Size in US or EU numbers.
Understanding Your UK Bra Size Results
After using the calculator, you get a Bra Size like 34DD or 36C. If the result is different from what you usually buy you might have been wearing the wrong size. Many people are surprised to see a new UK Bra Size. Bodies change with time and so do your fit.
If you feel unsure or are between sizes try our Sister Size Calculator.
Common Fit Problems and Simple Solutions
Your Bra Size can solve many fit problems. If your band rides up your back it may be too loose. Try a smaller band. If your straps fall off, try adjusting them or choose a style with closer straps. If your cups feel empty they may be too big. If you spill over the cups you might need a larger cup size. Underwire should sit flat and feel gentle. You can get more advice from our Bra Fit Problems and Solutions page.
UK Bra Size Conversion Chart
Shopping outside the UK can be confusing. UK Bra Size does not match US or EU sizes. The table below shows UK Bra Size with other countries. Always check the size chart before you buy. Our Bra Size Converter helps make this easy.
| UK Size | US Size | EU Size | AUS Size |
|---|---|---|---|
| 32D | 32D | 70D | 10D |
| 34DD | 34DD/E | 75E | 12DD |
| 36E | 36DDD/F | 80F | 14E |
| 38F | 38G | 85G | 16F |
Bra Size for Every Body
Every stage of life can affect your Bra Size. Teenagers see fast changes. Maternity and breastfeeding make sizes change too. After menopause or surgery the body can feel different and your Bra Size might change again. People with fuller busts need strong support. Look for wide bands and sturdy straps. Find support using our Plus Size Bra Calculator or the Teen Bra Size Calculator.
Shopping Tips for Bra Size
When you shop for bras in the United Kingdom, always use your latest Bra Size. UK shops like Marks and Spencer, Boux Avenue, and Bravissimo use true UK Bra Size numbers. You can try on a few styles to see what works best. Always check return policies before you buy. Use our Bra Size Calculator each time you shop for the right fit.