International bra size guide

Translate your measurements across US, UK, EU, FR, IT, JP, and AU size systems so you can shop anywhere with confidence.

Jump to the conversion chart Read the in-depth conversion guide

Tip: have both snug underbust and standing bust measurements ready for the most accurate conversion.

What you can do here

Compare every major international band and cup label in one glance.
Learn the three-step workflow pros use to translate sizes without losing cup volume.
Find direct links to inch and centimeter calculators plus sister size support.

Global band & cup conversion

Use this chart to see how a size like 36C converts into UK, EU, FR, IT, JP, and AU labels. Start with your most comfortable size, then trace across the row.

Global Size Conversion

US/UK	EU	FR	IT	JP	AU/NZ	DE	PK	IE	ZA
28A	60A	75A	1A	65A	6A	60A	28A	28A	28A
28B	60B	75B	1B	65B	6B	60B	28B	28B	28B
28C	60C	75C	1C	65C	6C	60C	28C	28C	28C
28D	60D	75D	1D	65D	6D	60D	28D	28D	28D
28DD	60E	75E	1E	65E	6DD	60E	28DD	28DD	28DD
28E	60F	75F	1F	65F	6E	60F	28E	28E	28E
28F	60G	75G	1G	65G	6F	60G	28F	28F	28F
28G	60H	75H	1H	65H	6G	60H	28G	28G	28G
30A	65A	80A	2A	70A	8A	65A	30A	30A	30A
30B	65B	80B	2B	70B	8B	65B	30B	30B	30B

International cups advance at different rates (single letters vs. double letters), so always confirm the fit with a try-on or sister-size check.

Convert your size in three steps

Measure accurately

Record a snug underbust and a standing bust measurement. Add leaning or lying bust numbers if your shape changes between positions.

Match the base size

Locate your current size in the chart (or enter it into the calculator) and follow the row to the target country column.

Verify with sister sizes

If the converted band feels off, slide to the sister size above or below while adjusting the cup in the opposite direction.

Lock in your global fit

Run your numbers through the calculator, then compare silhouettes in the perception guide so each international size still feels like you.

Open the bra size calculator See how sizes look

Helpful tools

CM converter

Enter metric measurements and get instant international outputs.

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IN converter

Work in inches but still export results across every major sizing system.

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US to UK conversion guide

Swap cup letters between American and British sizing with worked examples.

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Sister size navigator

Adjust band tightness without losing cup volume when shopping different regions.

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International sizing FAQ

Why do bra sizes change between countries?

Band labels are based on either inches or centimeters, and cup letters escalate differently by market (single vs. double letters). That’s why a 34D in the US maps to 75D in the EU and 90D in France.

How do I convert if I’m between band sizes?

Start with the closest band shown in the chart, then test the sister size above or below. For example, if 34 feels tight, convert the 36 band and drop the cup one letter to keep the same volume.

What measurements should I keep on hand?

Keep your snug (or tight) underbust plus at least one bust measurement (standing). For fuller busts, add leaning and lying measurements to check which cup depth feels best across brands.