Dress size converter

US, UK, EU, Australian and Japanese dress sizes side by side.

Convert a dress size

Where do I measure?

Dress sizes are set from three measurements: the fullest part of the bust, the narrowest part of the waist and the fullest part of the hips. Measure over the underwear you would wear with the dress, with the tape level and snug.

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The full table

Women's dress size equivalents by region
USUKEUAUJP
043245
263467
483689
610381011
812401213
1014421415
1216441617
1418461819
1620482021
1822502223
2024522425
2226542627

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Where the numbers come from

The table uses the conversion most retailers publish: add 4 to a US size for the UK and Australian size, add 32 for the EU size, and Japanese sizes run in odd numbers from 5. It is a convention rather than an official standard.

That is why it helps you find roughly where you sit in an unfamiliar system, but can't guarantee a fit. Two brands in the same country can label the same measurements two sizes apart. The brand's own size chart is the only reliable guide, so check your bust, waist and hip against it before ordering.

For where each measurement is taken, see the body shape calculator.

Frequently asked questions

Why do two brands in the same country differ?

Size labels are conventions, not standards that brands must meet. Each brand cuts to its own block, and the same label can differ by two sizes at the waist.

Should I size up or down between two sizes?

Size up for structured pieces such as blazers and fitted dresses, which have no give. Size down for knitwear and jersey, which stretch.

Do Japanese sizes run smaller?

Japanese sizes use a different numbering, so the number itself can't be compared with a US size. Use the table rather than assuming a direct match.