EU shoe size 40
Updated: 14 July 2026
EU shoe size 40 maps to a foot length of 25.5 cm, which is about 10 inches. For women that is UK 7 and US 9, for men UK 7 and US 8. Foot length is the one value you can measure yourself, and everything else follows from it.
Size 40 for women
| EU | Foot length | UK | US |
|---|---|---|---|
| EU 38 | 24.0 cm | UK 5.5 | US 7.5 |
| EU 39 | 24.5 cm | UK 6 | US 8 |
| EU 40 | 25.5 cm | UK 7 | US 9 |
| EU 41 | 26.0 cm | UK 7.5 | US 9.5 |
| EU 42 | 26.5 cm | UK 8.5 | US 10.5 |
Size 40 for men
| EU | Foot length | UK | US |
|---|---|---|---|
| EU 39 | 24.5 cm | UK 6 | US 7 |
| EU 40 | 25.5 cm | UK 7 | US 8 |
| EU 41 | 26.0 cm | UK 7.5 | US 8.5 |
| EU 42 | 26.5 cm | UK 8.5 | US 9.5 |
Measure, do not guess
Measure barefoot on a sheet of paper, from the heel to the longest toe, and use the longer of your two feet. Do not add anything to the result, read the length straight off the chart.
The rows next to 40
EU 39 stands for 24.5 cm, EU 41 for 26.0 cm. That is all the chart says: it maps each listed foot length to a size, and there is nothing between the rows.
The gap between 40 and 41 is 0.5 cm of foot length.
The gap between 39 and 40 is 1.0 cm.
Whether one particular shoe fits comes down to the size chart of the brand. Compare your measured foot length with that chart and try the shoes on.
Common questions
How many cm is EU shoe size 40?
25.5 cm of foot length, about 10 inches. That is the length ISO 19407 assigns to this size. Do not add anything to your own measurement.
What is EU size 40 in US sizes?
US 9 for women and US 8 for men. The two scales sit one number apart.
Should I take 40 or 41?
Measure your foot and compare the result with the size chart of the brand. In the ISO chart 25.5 cm belongs to 40 and 26.0 cm belongs to 41. For lengths in between the chart makes no promise about fit.