Shop HauteFlair's International Bra Range
HauteFlair carries US, UK, French, and Polish brands — every product page lists the brand's native size and your local equivalent, side by side.
Shop All Bras → Use the Converter ↓- Bands: US and UK use inches (matching numbers); EU, Japan, and China use centimeters; France/Spain/Belgium add 15 cm to the EU number; Italy uses small numbers (1–6); Australia uses a numeric clothing scale.
- Cup letters match across every system through D — they only diverge starting at DD.
- US doubles up (DD, DDD); UK and Australia keep the alphabet going (DD, E, F, FF); EU, France, Italy, and Japan use a continuous alphabet with no DD (D, E, F, G).
- EU/Italian/Japanese E = US DD; EU F = US DDD; EU G = US G. Same body, different label.
- Japanese and many Asian brands run a cup small — size up one cup letter when buying them.
- The number on a continental label (75, 80, 90) is the band in centimeters, never the bust.
- Conversion charts are starting points. Brand grading varies; always check the brand's own size guide.
The Bra Size Converter
Pick the system you currently shop in, choose the band and cup you wear, and the converter returns the equivalent across all seven systems — plus your sister sizes. This converts a size you already know; if you've never been measured, start with the calculator instead (linked below).
Convert Your Size Across Seven Countries
Choose your system, band, and cup. The converter shows your equivalent in US, UK, EU, French/Spanish, Italian, Australian, and Japanese sizing, plus your sister sizes.
Why Bra Sizes Don't Translate Across Countries
There is no single international standard for bra sizing. Each major manufacturing region built its own conventions decades ago, and they persist today even though the underlying math — band plus bust difference equals cup — is universal. The differences fall into three buckets.
Units of Measurement
The US, UK, and Australia size bands in inches. Continental Europe, Japan, and China size in centimeters. France, Spain, and Belgium add a fixed offset on top of the EU centimeter number, and Italy abandons the circumference entirely for a simple 1-to-6 scale. This is why a US 34, EU 75, French 90, Italian 2, and Japanese 75 all describe the same underbust — different number, same body.
Cup Letter Conventions
Three different ladders. The US doubles up: A, B, C, D, DD, DDD, DDDD. The UK (and Australia) alphabetize after DD: A, B, C, D, DD, E, F, FF, G, GG. The EU, France, Italy, and Japan use a continuous alphabet with no DD: A, B, C, D, E, F, G, H. All three count the same cup volumes — they only label them differently above D. This is where the overwhelming majority of cross-country sizing errors happen.
Brand Grading and Fit Models
Even within one country, two brands can grade the same labeled size half a cup apart. Across countries the gap widens. Japanese brands typically run a cup smaller than Western brands at the same labeled size; UK full-bust specialists often run truer than US chain brands. The conversion math is universal; the way a labeled size actually fits is not.
Master International Conversion Chart
The complete cross-system reference. Find the size you currently wear and read across to its equivalents. This covers the most commonly shopped sizes; the converter above handles every edge case.
| US | UK | EU | FR / ES | Italy | AU / NZ | Japan |
|---|---|---|---|---|---|---|
| 30A | 30A | 65A | 80A | 0A | 8A | 65A |
| 30C | 30C | 65C | 80C | 0C | 8C | 65C |
| 32B | 32B | 70B | 85B | 1B | 10B | 70B |
| 32C | 32C | 70C | 85C | 1C | 10C | 70C |
| 32D | 32D | 70D | 85D | 1D | 10D | 70D |
| 32DD | 32DD | 70E | 85E | 1E | 10DD | 70E |
| 32DDD | 32E | 70F | 85F | 1F | 10E | 70F |
| 34B | 34B | 75B | 90B | 2B | 12B | 75B |
| 34C | 34C | 75C | 90C | 2C | 12C | 75C |
| 34D | 34D | 75D | 90D | 2D | 12D | 75D |
| 34DD | 34DD | 75E | 90E | 2E | 12DD | 75E |
| 34DDD | 34E | 75F | 90F | 2F | 12E | 75F |
| 34G | 34F | 75G | 90G | 2G | 12F | 75G |
| 36C | 36C | 80C | 95C | 3C | 14C | 80C |
| 36D | 36D | 80D | 95D | 3D | 14D | 80D |
| 36DD | 36DD | 80E | 95E | 3E | 14DD | 80E |
| 36DDD | 36E | 80F | 95F | 3F | 14E | 80F |
| 38C | 38C | 85C | 100C | 4C | 16C | 85C |
| 38D | 38D | 85D | 100D | 4D | 16D | 85D |
| 38DD | 38DD | 85E | 100E | 4E | 16DD | 85E |
| 40D | 40D | 90D | 105D | 5D | 18D | 90D |
| 40DD | 40DD | 90E | 105E | 5E | 18DD | 90E |
Where Cup Letters Diverge: US vs UK vs EU
Above the D cup, the three major cup-letter systems diverge significantly, and this is where almost all conversion errors happen — wearers assume cup letters align across systems, and they don't. The table below shows the complete cup ladder for the same bust-to-band difference in inches.
| Bust − Band | US Cup | UK Cup | EU / FR / IT / JP Cup |
|---|---|---|---|
| 1″ | A | A | A |
| 2″ | B | B | B |
| 3″ | C | C | C |
| 4″ | D | D | D |
| 5″ | DD | DD | E |
| 6″ | DDD | E | F |
| 7″ | G | F | G |
| 8″ | H | FF | H |
| 9″ | I | G | I |
| 10″ | J | GG | J |
| 11″ | K | H | K |
Through D, every system uses the same letter. From DD up, they split. If you wear a US DD or larger, always check the cup column when shopping international brands — above the F cup the letter can differ by two notches between US and UK. A US 34G is a UK 34F and an EU 75G. Same body, three labels.
Country-by-Country Conversion
The master chart gives you the equivalents; this section explains the logic of each system so you can convert in your head and spot a bad chart when you see one.
UK to US (and US to UK)
The easy part: bands are identical. A UK 34 band is a US 34 band. Cup letters also match exactly through D and through DD. They diverge only above DD, because the UK continues the alphabet (E, F, FF, G, GG) while the US stacks Ds and then jumps to G. So a UK 34E is a US 34DDD; a UK 34F is a US 34G; a UK 28FF is a US 28H; a UK 30H is a US 30K. When you see a UK size with a single letter above D, add one notch to find the US equivalent above DDD.
EU (Continental Europe)
EU bands are centimeters in 5 cm steps. The mapping is fixed: US 30 = EU 65, US 32 = EU 70, US 34 = EU 75, US 36 = EU 80, US 38 = EU 85, US 40 = EU 90. Cup letters run a continuous alphabet with no DD, so EU E = US/UK DD, EU F = US DDD (UK E), and EU G = US G (UK F). An EU 75D is a US 34D; an EU 75E is a US 34DD.
French, Spanish & Belgian
France, Spain, and Belgium use the EU centimeter cup system but add 15 to the band number. So French 90 = EU 75 = US 34, and French 95 = EU 80 = US 36. The large numbers throw people off — a French 95C is not a 95 cm band, it's the EU 80 band with 15 added. Cup letters are identical to EU. A French 90C is a US 34C; a French 95E is a US 36DD.
Italian
Italy drops the circumference entirely and numbers bands 1 through 6. Italian 1 = EU 70 = US 32; Italian 2 = EU 75 = US 34; Italian 3 = EU 80 = US 36; Italian 4 = EU 85 = US 38; Italian 5 = EU 90 = US 40; Italian 6 = EU 95 = US 42. Each step up is one band larger. Cups follow the EU continuous alphabet. An Italian 3C is a US 36C; an Italian 2E is a US 34DD.
Japanese & Asian (Chinese) Sizing
Japan, China, and most of East Asia use the EU centimeter system on paper — a Japanese 75 band is an EU 75 band, and cups follow the continuous alphabet. The catch is fit, not math: Asian brands tend to grade cups smaller and pad more heavily, so the same labeled size runs roughly one cup small versus Western brands. The math says US 34C = JP 75C, but in practice a US 34C usually fits better as a JP 75D. Treat the conversion as your floor and size the cup up one letter on a first Japanese or Chinese order.
Australian & New Zealand
Australia and New Zealand use a numeric dress-style band scale: AU 8 = US 30, AU 10 = US 32, AU 12 = US 34, AU 14 = US 36, AU 16 = US 38. Add 22 to the AU band to get the US band (AU 12 + 22 = US 34). Cup letters follow the UK ladder — DD, E, F, FF — not the US double-letter system. An AU 12D is a US 34D; an AU 12DD is a US 34DD; an AU 12E is a US 34DDD.
Indian Sizing
India generally follows the UK inch-band, UK-cup convention, so an Indian 34D is a US 34D and an Indian 34E is a US 34DDD. Many Indian retailers also publish the band in centimeters (the EU number), so you'll see 75, 80, 85 alongside 34, 36, 38. When a chart mixes both, trust the cup letter and use the UK rule above the D cup.
Bra Size in Centimeters
The number on a continental European, Japanese, or Chinese bra label — 70, 75, 80 — is the band measured in centimeters, never the bust. To move between inches and centimeters, multiply your inch band by 2.54 and round to the nearest 5. The standard rounded mapping is below.
| US / UK band (in) | Exact cm (× 2.54) | Rounded label (EU / JP / CN) | French / Spanish |
|---|---|---|---|
| 28″ | 71.1 cm | 60 | 75 |
| 30″ | 76.2 cm | 65 | 80 |
| 32″ | 81.3 cm | 70 | 85 |
| 34″ | 86.4 cm | 75 | 90 |
| 36″ | 91.4 cm | 80 | 95 |
| 38″ | 96.5 cm | 85 | 100 |
| 40″ | 101.6 cm | 90 | 105 |
An 80 in EU, Japanese, or Chinese sizing is an 80 cm underbust band — the same body as a US/UK 36. So an 80C is a US 36C, and an 80B is a US 36B. The continental number always refers to the band, which is why it tracks neatly to the inch band and never to the bust measurement.
Common Conversions, Worked Out
The exact cross-system lookups people search most. Each follows the same logic: match the band to its centimeter or inch equivalent, then translate the cup letter using the divergence rule.
| You wear | In US sizing | The logic |
|---|---|---|
| 70B (EU / JP) | 32B | 70 cm band = US 32; B cup matches through D |
| 75B (EU / JP) | 34B | 75 cm band = US 34; B cup matches |
| 80B (EU / JP) | 36B | 80 cm band = US 36; B cup matches |
| 85B (EU / JP) | 38B | 85 cm band = US 38; B cup matches |
| 75D (EU) | 34D | 75 cm = US 34; D matches through D |
| 75E (EU) | 34DD | EU E = US DD (the first divergence) |
| 34E (UK) | 34DDD | UK E = US DDD above the DD cup |
| 28FF (UK) | 28H | UK FF sits at the US H notch |
| 30H (UK) | 30K | UK H is two notches past US H, at K |
| French 95C | 36C | French 95 = EU 80 = US 36; C matches |
| Italian 3C | 36C | Italian 3 = EU 80 = US 36; C matches |
Six Common Conversion Pitfalls
Most conversion mistakes fall into the same six patterns. The converter and charts above prevent each — but if you're converting by memory or with an incomplete chart, watch for these.
A US DD is a UK DD. But a US DDD is a UK E, and a US G is a UK F. The ladder diverges starting at DD — always check the cup column above D when crossing systems.
EU 80 and French 95 are the same band — France just adds 15. Don't hunt for a "true" 95 cm underbust; it doesn't exist. The number is a label, not a measurement.
The math says US 34C = JP 75C. The fit usually says JP 75D. Asian brands grade smaller and pad more — size the cup up one letter on a first order.
Brand grading varies enough internationally that the converted size can fit looser or tighter than expected. Try the converted size plus its two sister sizes when entering a new brand.
Some retailers list brand-specific conversions that quietly drift from the standard. If a brand's "US equivalent" is two cup letters off the master chart, that's a grading note, not a real conversion — verify here first.
International orders often don't have free returns. Check return windows, restocking fees, and exchange options before ordering across borders — and read reviews from wearers with similar measurements.
The charts and converter give you the standard equivalents. They can't account for brand-specific grading, fabric stretch, wire shape, or fit-model differences. Treat any conversion as the starting point for the brand's own size chart — and when in doubt, go with the size the brand's own customers say fits, not the size the math says should.
"Conversion charts are the easy part. The hard part is brand variation — the same labeled size fits differently across labels even within one country, and the gap widens across borders. The chart gives you the right size to try first; the second-best size is always a sister size away."
— HauteFlair Fit Editorial Team
Using Sister Sizes for International Shopping
Sister sizes solve most of what conversion charts can't. The relationship is universal — it works across every system because cup volume is universal. When the country's brand runs tight (Japanese, some Asian), sister-up: one band larger, one cup smaller. When it runs loose (some EU and French), sister-down: one band smaller, one cup larger. The cup volume stays equivalent either way.
The complete logic, with examples for every band, lives in our sister sizes guide. The practical rule for cross-border orders: try the converted size plus its two sister sizes — one of the three almost always fits cleanly.
Frequently Asked Questions About Bra Size Conversion
What's the difference between US and UK bra sizes?
How do EU bra sizes compare to US?
What is 75B bra size in US?
Why do French bra sizes have such large numbers like 95C?
How does Italian bra sizing work?
Are Japanese and Asian bra sizes the same as European?
What does an 80 cm bra size mean?
How do I convert my band size to centimeters?
What size am I if my measurements fall between two systems?
Do all brands within a country use the same conversion?
This page is for informational and educational purposes only. HauteFlair is not responsible for individual fit outcomes — bra sizing varies between brands and styles, and the conversions on this page reflect industry-standard grading, not contractual mappings. For best results, refer to each brand's specific size chart and consider a professional fitting consultation. Last reviewed: June 4, 2026.
