Shoe Size Converter

How It Works

Every shoe size is really a foot length wearing a local label. US and UK sizes count in barleycorns (a third of an inch per full size) but start counting from different points, so a US men's size sits about half a size above the UK size for the same foot, and a US women's size sits about two sizes above it. EU sizes count in Paris points of two-thirds of a centimetre and are unisex — an EU 42 is the same length for men and women. This converter matches your size to a foot length in centimetres and reads the other systems back from that length.

Worked Example

A men's US 9 converts to a UK 8.5, an EU 42 and a foot length of 26 cm. The same foot in women's sizing is a US 10 — women's US numbers run higher than men's for the same foot, which is why the charts are kept separate. Going the other way, a women's US 8 is a UK 6, an EU 38.5 and a foot length of 24 cm. If your foot length falls between two rows, the converter picks the nearest size and rounds up at the halfway point, since a slightly roomy shoe beats a tight one.

How to Use This Converter

Choose the men's or women's chart first — the two scales are different, so this step matters. Then pick the system your known size is in (US, UK, EU or foot length in centimetres) and enter the value. The result shows your size in all four systems at once, with the foot length in centimetres. Reset restores the example (men's US 9).

Tips and Practical Advice

Measure your foot rather than trusting a label: stand on paper, mark heel and longest toe, and measure the distance in centimetres. Measure in the afternoon, when feet are at their largest, and size to the longer foot — most people have one foot slightly bigger than the other. Brands drift from the standard scale by half a size or more, so check the brand's own chart against your centimetre measurement before ordering.

Standard Shoe Size Chart (Whole Sizes)

Source: Sizely standard shoe size chart (US, UK, EU and foot length), checked 13 November 2026. Half sizes are included in the converter above. All conversions are approximate — brands vary.