US to EU Shoe Size Converter
Enter your US shoe size and select men's or women's sizing to get your European (EU) size, UK size, and foot length in both centimeters and inches. You can also input foot length directly to find your size across all systems. The reference table below covers every common size from US 4 to US 14.
How US and EU shoe sizes work
US shoe sizes are based on barleycorn units (1/3 inch) starting from a child's zero point, with separate scales for men and women. European sizes use the Paris-point system, where each size unit equals exactly 2/3 of a centimeter of foot length. Because the two systems start from different reference points, there is no single fixed offset: for men, a rough guide is EU = US + 33, and for women EU = US + 31, but these are approximations. Half sizes and brand-specific lasts mean the lookup table on this page is more reliable than any formula for everyday shopping.
How to measure your foot for the most accurate conversion
Stand on a piece of paper with your heel against a wall. Mark the tip of your longest toe. Measure the distance from heel to mark in centimeters. That number is your foot length. Apply the EU formula: EU = (foot length in cm x 3/2) + 2. For example, a 27 cm foot gives (27 x 1.5) + 2 = 42.5, which rounds to EU 43 for most men's shoes. Measure both feet and use the longer measurement, since feet are rarely identical.
Women's vs. men's sizing
Men's and women's shoes use the same EU numbers but different US numbers. A US women's 9 is typically EU 39 to 40, while a US men's 9 is EU 42. This roughly 1.5-size difference comes from the different barleycorn offsets in each gender's scale. If you need to buy men's shoes in women's sizes or vice versa, subtract about 1.5 US sizes when going from women's to men's, or add about 1.5 when going the other way.
Brand-specific sizing and when to double-check
EU sizes are not perfectly standardized across manufacturers. Brands design shoes on proprietary lasts (the foot-shaped mold), so the same EU 42 can vary by up to a full size between a running shoe and a dress shoe, or between different brands. Nike, Adidas, and Puma generally follow the standard table closely. Heritage brands such as Birkenstock and many Italian manufacturers may run narrow or short. Always consult the brand's own fit guide when buying online, and factor in the width of your foot, not just length.
Men's US to EU shoe size conversion table
| US | EU | UK | CM | Inches |
|---|---|---|---|---|
| 4 | 37 | 3.5 | 22 | 8.7 |
| 4.5 | 37 | 4 | 22.5 | 8.8 |
| 5 | 38 | 4.5 | 23 | 9 |
| 5.5 | 38 | 5 | 23.5 | 9.3 |
| 6 | 39 | 5.5 | 24 | 9.4 |
| 6.5 | 39 | 6 | 24.5 | 9.6 |
| 7 | 40 | 6.5 | 25 | 9.8 |
| 7.5 | 40 | 7 | 25.5 | 10 |
| 8 | 41 | 7.5 | 26 | 10.2 |
| 8.5 | 41 | 8 | 26.5 | 10.4 |
| 9 | 42 | 8.5 | 27 | 10.6 |
| 9.5 | 42 | 9 | 27.5 | 10.8 |
| 10 | 43 | 9.5 | 28 | 11 |
| 10.5 | 43 | 10 | 28.5 | 11.2 |
| 11 | 44 | 10.5 | 29 | 11.4 |
| 11.5 | 44 | 11 | 29.5 | 11.6 |
| 12 | 45 | 11.5 | 30 | 11.8 |
| 12.5 | 45 | 12 | 30.5 | 12 |
| 13 | 46 | 12.5 | 31 | 12.2 |
| 13.5 | 46 | 13 | 31.5 | 12.4 |
| 14 | 47 | 13.5 | 32 | 12.6 |
Standard conversions for adult men. EU (European) sizes follow the Paris-point system. CM is approximate foot length.
Frequently asked questions
What is the US to EU shoe size formula?
For men's shoes, the approximate formula is: EU size = US size + 33. For women's shoes, EU size = US size + 31. These formulas are approximations because half sizes and brand lasts introduce variation. For any size ending in .5 on the US scale, EU often stays on the same whole number as the size below. The lookup table on this page gives the standard industry mapping for each half-size increment.
What is a US men's 10 in EU?
A US men's 10 is EU 43 in the standard conversion table. Your foot is approximately 28.0 cm (11.0 inches) long. In UK sizing, a men's 10 is UK 9.5.
What is a US women's 7 in EU?
A US women's 7 converts to EU 37 to 38 depending on the brand. The standard table puts it at EU 37, with a foot length of about 23.5 cm (9.3 inches). If you are between sizes, try EU 38 for a slightly roomier fit.
Are EU shoe sizes the same for men and women?
Yes, EU sizes use a single unisex Paris-point scale based on foot length, so EU 40 describes the same physical foot regardless of gender. The difference is that a US women's 9 and a US men's 7 both correspond to roughly EU 40, because US sizing uses different starting points for each gender.
How do I convert foot length in inches to EU size?
First convert inches to centimeters by multiplying by 2.54. Then apply the EU (Paris-point) formula: EU = (foot length in cm x 3/2) + 2. For example, a 10.6-inch foot is 10.6 x 2.54 = 26.9 cm, and (26.9 x 1.5) + 2 = 42.4, which rounds to EU 42. This calculator handles that arithmetic automatically when you select "Foot length (inches)" as the input mode.
Why do shoe size conversions vary by brand?
EU sizes define a length range, not a precise last shape. Brands design their own lasts with different widths, heel cups, and toe boxes. One brand's EU 42 might fit a 27.0 cm foot perfectly while another brand's EU 42 suits a 27.5 cm foot better. As a result, runners often size up half a size in road shoes compared to casual shoes even at the same EU number. When in doubt, measure your foot in centimeters and compare it to the brand's size chart, which usually lists the foot-length range each size is designed for.