Men's UK to US Shoe Size Chart
| UK | EU | US | CM |
|---|---|---|---|
| 3 | 35 | 4 | 22 |
| 3.5 | 35.5 | 4.5 | 22.5 |
| 4 | 36 | 5 | 23 |
| 4.5 | 37 | 5.5 | 23.5 |
| 5 | 37.5 | 6 | 24 |
| 5.5 | 38 | 6.5 | 24.5 |
| 6 | 39 | 7 | 25 |
| 6.5 | 40 | 7.5 | 25.5 |
| 7 | 41 | 8 | 26 |
| 7.5 | 41.5 | 8.5 | 26.5 |
| 8 | 42 | 9 | 27 |
| 8.5 | 43 | 9.5 | 27.5 |
| 9 | 44 | 10 | 28 |
| 9.5 | 44.5 | 10.5 | 28.5 |
| 10 | 45 | 11 | 29 |
| 10.5 | 46 | 11.5 | 29.5 |
| 11 | 47 | 12 | 30 |
| 11.5 | 47.5 | 12.5 | 30.5 |
| 12 | 48 | 13 | 31 |
| 13 | 49 | 14 | 31.5 |
How the UK and US scales sit against each other
US holds a steady 1 above UK at every row of this chart, so UK 8 converts to US 9 and the same gap carries from the smallest size to the largest. A single step converts the whole range cleanly. That row sits at 270 mm of foot length, the measurement both national numbers are trying to describe.
Britain and America both grew their shoe numbers from the barleycorn, so the scales run parallel rather than through different units. The offset comes from where each fixed its starting point: the American scale begins a step further along, which is why a UK label always reads smaller than the US size for the same shoe. Brand lasts blur the edge, since a brand that grades on a UK last, as many running lines do, can print a UK number half a step off the arithmetic.
Common questions
Is a UK shoe size the same as a US size?
No. For the same shoe the US number sits above the UK number, so buying by the UK figure on a US chart gives a shoe that runs short.
Do I round up or down between UK and US?
Read straight across the table rather than rounding. Both scales step in halves, so the matching size is exact, not a rounded guess.
Men's shoe size charts · Foot length vs shoe size · Numbers inside your shoe · Printable shoe wall chart
Sources
Barleycorn and the shoe scale: SATRA Technology; Brannock Device, US patents 1925 and 1927.
Brand last variation on official JP charts: Nike, adidas, New Balance, ASICS size guides.