Conversion guides
US to UK to EU to anywhere you ship.
Pick the two systems you are converting between. Ten systems across six charts, with every number either taken from the app’s own size charts or derived from them by a rule we show you.
Converting from
Into
Showing US → UK across 6 charts.
Women's clothing: US to UK
Letter sizes against every numeric scale.
Women's bottoms: US to UK
With waist and hip measurements on the same row.
Bra band sizes: US to UK
Band only. Cup letters are on the Bra template.
Men's shoes: US to UK
Foot length is the column that means the same thing everywhere.
Women's shoes: US to UK
Women’s footwear drifts more between regions than men’s.
Kids shoes: US to UK
The US scale restarts at 1 after 13.
Every system on this page, and where its numbers come from
Published conversion charts disagree with each other by as much as a full size. Rather than pick one and hope, the four native systems are the app’s own chart data, and the rest are derived from them by a fixed rule.
Women’s clothing 0–18, letter sizes XS–XXL alongside. Footwear follows the Brannock scale.
From the app’s charts
Women’s clothing runs four above US, so a US 8 is a UK 12. Also used in New Zealand.
From the app’s charts
The 32–50 scale, based on body measurements in centimeters. This is the German or Continental convention.
From the app’s charts
Womenswear matches UK. Footwear tracks US for women and UK for men, which catches people out.
From the app’s charts
French, also used in Belgium, Spain, and Portugal.
Derived · EU + 2
Italian, which runs the largest numbers of any clothing scale here.
Derived · EU + 4
Japanese clothing, odd numbers only. Runs small by Western standards; sizing up is the usual advice.
Derived · US + 5
Russian. The least corroborated offset on this page, so treat it as indicative.
Derived · EU + 6
Japanese and Chinese footwear, which are simply foot length in centimeters. The most reliable conversion here, because nothing is approximated.
Derived · Foot length
Three things worth knowing before you publish one of these
Conversions are conventions
There is no arithmetic turning a US 8 into an EU 40. It is an agreement, and brands drift half a size either side of it routinely. Start here, then correct against your own garments.
Foot length is the honest column
Regional shoe numbers are conventions. 26.7 centimeters is a measurement. It is also why the Japanese and Chinese footwear conversion is the only exact one on this page.
Show one region at a time
A shopper in Berlin does not need the AU column. Showing the chart by country narrows the table to what applies, and a narrower table actually gets read.
Put these on your product pages.
Install free and the conversion tables arrive as real charts, switchable between inches and centimeters, shown by country if you want.