US to UK Bra Size
Band numbers match. Cup letters match through D. After that, US DDD vs UK E/F naming differs by brand—use the table as a start, then confirm on the product chart. Need EU? See the EU → US table below.
| US | UK (typical) | Note |
|---|---|---|
| 32B | 32B | Bands match |
| 34C | 34C | Bands match |
| 36D | 36D | Bands match |
| 34DD | 34DD / 34E | Letter ladders diverge |
| 36DDD | 36E / 36F | Check brand chart |
EU to US bra size (common bands)
EU band ≈ underbust cm steps. Cup letters are a starting point only—brands still vary.
| EU | US / UK (typical) | Note |
|---|---|---|
| 70B | 32B | EU 70 ≈ US/UK 32 |
| 75B | 34B | EU 75 ≈ US/UK 34 |
| 80B | 36B | EU 80 ≈ US/UK 36 |
| 80C | 36C | Cup letter starting point |
| 85C | 38C | EU 85 ≈ US/UK 38 |
How to convert
- Keep the same band number (34 stays 34).
- Keep the cup letter through D.
- Above D, map DD/DDD carefully and prefer the brand’s UK chart.
- Still unsure? Bra size calculator.
US to UK bra size conversion
US and UK share band numbering (32, 34, 36) but cup letters diverge after D. US DDD = UK E, US G may differ from UK G. Always convert cup using a crosswalk table, not assume same letter.
Band is under-bust inches rounded to even number on both systems.
Cup letter crosswalk
| US cup | UK cup | EU cup approx |
|---|---|---|
| D | D | D |
| DD/E | DD | E |
| DDD/F | E | F |
| G | F | G |
| H | FF | H |
| I | G | I |
Convert US bra to UK
- 1
Band stays
US 34 band = UK 34 band (inches).
- 2
Map cup letter
Use table for DD and above.
- 3
Sister size check
34G US → 34F UK roughly per brand.
- 4
Try both if between
UK brands on ASOS use UK labels.
US/UK bra notes
- EU bras use cm band (75, 80, 85) not inches.
- US brands on UK sites list dual sizes sometimes.
- Sports bras may ignore cup—S/M/L by bust cm.
- Nursing bras: same conversion if structured cup.
Bra conversion mistakes
Avoid: US G = UK G
Instead: Often US G = UK F.
Avoid: Band cm 75 = 75 inches
Instead: 75 EU band ≈ 34 underbust.
Avoid: Same letter all brands
Instead: Panache UK vs Wacoal US sizing differ slightly.
US vs UK cup depth
UK brands (Panache, Freya) use deeper cups at same letter than some US mall brands—letter match still needs try-on.
Sports bras in S/M/L bypass cup translation—use bust cm on that chart instead.
Nursing cups change during feeding months—remeasure band each trimester and postpartum.
Return or exchange workflow
- 1
Keep packaging
Boxes and hang tags speed refunds when size is wrong.
- 2
Try indoors only
Scuffed soles or worn labels may void returns.
- 3
Document fit issue
Photo of pinch point or heel gap helps support.
- 4
Reorder fast movers
Half sizes and popular EU widths sell out during sales.
Real-world notes on us to uk bra size
Charts for us to uk bra size summarize typical grading—they are not a guarantee for every season or factory run. When a brand refreshes a last or fit block, reviews often mention it before charts update.
Marketplace listings may ship mixed inventory. Compare the size stamped inside the item on delivery with the chart row you used at checkout.
If you are gifting, ask for body or foot measurements in cm instead of guessing their usual tag size. Gift returns are harder when wear signs appear.
Sales associates can measure you in store; take a photo of the store chart if you later order online from the same brand.
Between online orders, remeasure if your weight changed, you had a foot injury, or you switched sock or insole thickness for running.
Teaching kids their cm size helps them shop later—write foot length inside closet door as a reference.
Document the date you measured—repeat after pregnancy, injury, or major weight change so old numbers do not linger in notes apps.
Measurement hygiene
- Stand weight evenly on both feet when tracing outlines.
- Measure twice on different days if you are between rows.
- For clothing, wear the undergarments you will use with the piece.
- For shoes, match sock thickness to intended use.
- Convert using cm first, then read US/UK/EU from the row—never reverse the order.
- Keep a saved note on your phone with your foot cm and bust/waist/hip cm.
- Update kids' sizes every growth spurt—do not buy multiple seasons ahead.
- Check whether reviews mention 'runs small' for the exact model you chose.
- Prefer free-return windows when trying a new brand last.
- Wide feet: try width SKUs before adding length—see 2E vs 4E shoe width.
Common us to uk bra size errors
Avoid: Using an old size tag from a different brand
Instead: Measure today and match the chart row for this category.
Avoid: Rounding down cm to stay in a smaller letter size
Instead: Round to the row that fits your longer foot or largest body measure.
Avoid: Ignoring half sizes or wide widths
Instead: Half steps and 2E/4E widths fix fit better than guessing.
Avoid: Assuming sales charts match outlet or marketplace stock
Instead: Verify inside label on delivery against the chart you saved.
FAQ
Are US and UK bra band sizes the same?
Yes for the common even bands (32, 34, 36, 38). A US 34 band is a UK 34 band. Cup letters match through D, then naming diverges.
What is US DD in UK?
US DD is often UK DD or E depending on the brand ladder. Always check that brand’s chart—letters are not universal after D.
How do I convert bra size EU to US?
EU bands step by underbust cm (70, 75, 80…). EU 75 often starts near US/UK 34; EU 80 near 36. Cup letters are approximate—use the calculator and the brand chart.
What is 80B bra size in US?
EU 80B often maps near US/UK 36B as a starting point. Fit still depends on brand cut—try sister sizes if needed.