Shoe Size Converter

Common Examples

Input	Result
US 10 (men)	UK 9.5, EU 44, 28 cm
EU 42 (men)	US 8.5, UK 8, 26.5 cm
US 8 (women)	UK 6, EU 38.5, 25 cm
EU 37 (women)	US 6.5, UK 4.5, 23.5 cm
27 cm (men)	US 9, UK 8.5, EU 42.5

How It Works

How shoe size systems work

There is no single universal formula that converts perfectly between all shoe sizing systems, because each system was developed independently with different starting points and increments. Conversions rely on standardized lookup tables based on foot length in centimeters.

CM (Mondopoint) is the most logical system: the size number is the foot length in centimeters. A size 28 shoe fits a 28 cm foot. The ISO standard (ISO 9407) recommends this system, and it is used in Japan, Korea, and for international athletic footwear.

US sizes are based on the Brannock scale. Men’s sizes start at size 1 for a 7 2/3 inch (19.47 cm) foot and increase by 1/3 inch per full size. Women’s sizes are offset by approximately 1.5 sizes from men’s (a women’s 8.5 is roughly equivalent to a men’s 7).

UK sizes follow a similar barleycorn system (1/3 inch per size) but start at a different point than US sizes. UK sizes are typically about 0.5 to 1 size smaller than US sizes for the same foot.

EU (European) sizes use the Paris point system, where each size is 2/3 cm (6.67 mm). EU sizes do not differ between men and women for the same foot length, though fit and width vary by shoe design.

Men’s size chart

US	UK	EU	CM
7	6.5	40	25
8	7.5	41	26
9	8.5	42.5	27
10	9.5	44	28
11	10.5	45	29
12	11.5	46	30

Women’s size chart

US	UK	EU	CM
6	4	36.5	23
7	5	37.5	24
8	6	38.5	25
9	7	40	26
10	8	41	27
11	9	42.5	28

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Frequently Asked Questions

How do I convert US shoe size to EU?

Use the converter above or a size chart. There is no single formula because the two systems use different increments. As a rough guide, add 31-33 to a US men's size to get the approximate EU size (US 10 is roughly EU 43-44), but a lookup table is more accurate.

What is Mondopoint sizing?

Mondopoint is the ISO-standard shoe sizing system (ISO 9407) where the size equals the foot length in centimeters. A size 27 shoe fits a 27 cm foot. It is used in Japan, South Korea, and by NATO for military footwear.

Are men's and women's shoe sizes different?

Yes, in the US and UK systems. A women's US 8 is not the same foot length as a men's US 8. Women's sizes are offset by approximately 1.5 sizes: a women's US 9 is roughly equivalent to a men's US 7.5. In the EU system, the same number corresponds to the same foot length regardless of gender.

How do I measure my foot for the right size?

Stand on a piece of paper, mark the heel and the tip of your longest toe, and measure the distance in centimeters. Use that measurement as your CM/Mondopoint size, then convert to US, UK, or EU. Measure both feet, as they often differ slightly, and use the larger measurement.

Why do shoe sizes vary between brands?

Shoe sizing standards define the relationship between size number and foot length, but brands differ in last shape, width, and fit. A size 10 from one brand may feel different from another. The size charts here provide standard conversions; try on shoes whenever possible.

Learn More

How to Convert Shoe Sizes

Convert shoe sizes between US, UK, EU, and CM (Mondopoint) systems with complete men's and women's charts, measurement tips, and the formulas behind each sizing standard.