Sizes

Shoe, clothing and ring size charts

Sizes are labels, not units: no standard ties a US 9 to an EU 42, and two brands can differ by a full size. Each chart below is copied from a named source, a brand's published chart or a standard, linked at the bottom of the page, and anchored on the one thing you can measure at home: the length of the foot, the body circumference or the ring circumference in centimeters or millimeters.

Men's shoesMen's shoe sizes from US 6 to US 15 in UK, EU and foot length in centimeters, as published by Nike and by adidas, side by side, with how to measure your foot.Women's shoesWomen's shoe sizes from US 5 to US 12 in UK, EU and foot length in centimeters, as published by Nike and by adidas, side by side, with how to measure your foot.Kids' shoesChildren's shoe sizes from baby US 2C to youth US 7Y in UK, EU and foot length in centimeters, from Nike's published charts, with the measuring method.Women's clothingWomen's dress and top sizes from UK 4 to UK 26 converted to US, European and Italian sizes and letter sizes, with bust, waist and hip measurements in cm and inches, from ASOS and Mulberry.Men's clothingMen's shirt collar, jacket chest and trouser waist sizes converted between inches, centimeters, European sizes and letter sizes, from the ASOS size charts.RingsRing sizes from US 3 to US 13 converted to UK letters, Japanese and Swiss sizes, with the inner diameter and circumference in millimeters defined by the US scale and ISO 8653.

Why sizes do not convert exactly

Shoe scales measure the last, not the foot, and each brand maps them differently: for the same US women's 8, Nike prints EU 39 and adidas EU 40. Clothing scales were set by each country's industry decades ago and have drifted since. That is why the shoe charts here show Nike and adidas side by side instead of an average, and why the only reliable method is a tape measure and the chart of the brand you are buying. Ring sizes are the exception: ISO 8653 and the US scale are defined in millimeters, so they convert exactly.