Maternity & Sports Bra · UK Calculator
Maternity Bra Size
Calculator UK
Your body changes throughout pregnancy. Use this calculator to find your recommended maternity bra size for each trimester — based on your current UK bra size.
Maternity Bra Size Calculator
Sports Bra Size (UK)
Sports bras in the UK typically follow the same band/cup sizing. However, for high-impact sports, go down one cup size for extra support.
| Impact Level | Fit Advice | Cup Guide |
|---|---|---|
| Low | Yoga, Walking | Your usual cup size |
| Medium | Cycling, Hiking | Your usual cup size |
| High | Running, HIIT | Go down 1 cup for support |
Maternity Bra Tips
- ✓ Your size can increase by 2–4 cup sizes during pregnancy
- ✓ Buy maternity bras in your 3rd trimester for best fit
- ✓ Look for adjustable bands and extenders
- ✓ Re-measure after delivery and during breastfeeding
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