Shoe sizing past size 13

Sizes above 13 are where conversion charts start disagreeing with each other. The tables below are the common conventions. Treat them as a starting point, not a guarantee — the actual last a brand uses matters more than the number printed inside the shoe.

US men’s, UK and EU

The UK number is normally one below the US men’s number. The EU number is approximate and rounds differently between makers — a half-size gap in US terms often has no EU equivalent at all, so brands round in whichever direction suits their last.

Why the same size fits differently

• Length is not the whole story. Two shoes marked 15 can differ in instep height, toe box depth and heel volume. Length is the only dimension the number describes.
• Scaling gets rough at the top of the range. Many patterns are graded up from a mid-size sample. The further a size sits from that sample, the more the proportions drift.
• Half sizes thin out. Above 14, some makers stop offering half sizes entirely, which pushes people into rounding up.
• Category changes the fit. Running shoes are usually cut closer than work boots in the same nominal size.

Practical reading

If a size is at the very top of a brand’s range, it is more likely to be a scaled pattern than a purpose-built one. Where a brand offers the same size in more than one width, the wider option is often the better fit even for a normal-width foot, because the extra volume compensates for a shallow toe box.