Shoe Size Converter | Convert US to EU, UK to US, JP Shoe Sizes Online Free

Using a Shoe Size Conversion Chart

US, UK, EU, and JP footwear systems use different conventions, and a converted number cannot describe every brand's shape or width. Use this result to identify a likely equivalent, then measure both feet and compare the longer foot with the manufacturer's length and width chart. Socks, intended activity, and shoe construction can also affect the fit you need.

Foot size can change slightly during the day, so measure when your feet are at their largest and use the socks or insoles intended for the shoes. Pay attention to width, toe room, and the return policy as well as length. This is especially important for children's footwear and activity-specific shoes, where comfort and movement matter more than a label alone.

How do I convert my shoe size between US, UK, EU, and JP?

Select Men, Women, or Kids, choose the region of your known size, select that size, and convert it to see the corresponding values in the other systems.

Why does the same shoe size fit differently across brands?

Manufacturers use different lasts, toe shapes, widths, and sizing increments. A size chart is more useful when it includes foot length and width rather than only a regional label.

How should I measure my foot for online shoe shopping?

Stand on paper wearing the socks you plan to use, mark the heel and longest toe, measure both feet, and compare the longer measurement with the brand's chart. Allow extra room for activity and toe movement.

Is foot length enough to choose the correct shoe size?

Length is only one part of fit. Foot width, arch shape, toe room, shoe materials, and the intended activity can change how comfortable a size feels, so check the brand's width guidance when available.