Size 40 shoes in US, UK and cm
EU 40 is a US women's 9 and a US men's 7.5, UK 6.5. It fits a foot of about 25.7 cm.
| EU | UK | US women | US men | Foot, cm |
|---|---|---|---|---|
| 34 | 2 | 4 | 2.5 | 21.7 |
| 35 | 2.5 | 5 | 3.5 | 22.3 |
| 36 | 3.5 | 6 | 4.5 | 23 |
| 37 | 4 | 6.5 | 5 | 23.7 |
| 38 | 5 | 7.5 | 6 | 24.3 |
| 39 | 6 | 8.5 | 7 | 25 |
| 40 | 6.5 | 9 | 7.5 | 25.7 |
| 41 | 7.5 | 10 | 8.5 | 26.3 |
| 42 | 8 | 10.5 | 9 | 27 |
| 43 | 9 | 11.5 | 10 | 27.7 |
| 44 | 9.5 | 12 | 10.5 | 28.3 |
| 45 | 10.5 | 13 | 11.5 | 29 |
| 46 | 11 | 13.5 | 12 | 29.7 |
| 47 | 12 | 14.5 | 13 | 30.3 |
| 48 | 13 | 15.5 | 14 | 31 |
Stand on a sheet of paper against a wall, mark the tip of your longest toe and measure from the wall. Measure in the evening (feet swell during the day) and both feet – go by the longer one.
Enter measurements in the converter ("From measurements") and all your sizes collect here. The data stays in this browser.
- Foot length
- 25.1–25.7 cm
- Foot length, in
- 9.9–10.1″
- Inside length
- ~26.7–27.2 cm
- Mondopoint
- 257
Which foot fits a size 40
EU size 40 is made for a foot of about 25.1–25.7 cm. The inside of the shoe is 1–1.5 cm longer (~26.7–27.2 cm) – the room your toes need when you walk.
Measure in the evening, standing, both feet – and go by the longer one. Mondopoint (foot length in mm, used for ski boots and safety shoes) is 257.
Size 40 for women and men
The same EU 40 shoe has two US numbers: women's US 9 and men's US 7.5. The gap is 1.5 sizes because the US women's and men's scales start at different points. Unisex styles (sneakers, canvas shoes) are usually labelled in men's sizes.
The UK scale is the same for both: UK 6.5.
Between sizes (39–40 or 40–41)
Sneakers, winter boots and anything worn with thick socks – size up. Sandals and leather shoes that give with wear – size down. Some brands (Adidas, Nike) have in-between sizes such as 40½ or 40 2/3.
Frequently asked
01Size 40 shoes in US, UK and cm
EU 40 is a US women's 9 and a US men's 7.5, UK 6.5. It fits a foot of about 25.7 cm.
02How many cm is a size 40 shoe?
Size 40 fits a 25.1–25.7 cm foot; the inside of the shoe is about 26.7–27.2 cm.
03What US size is EU 40?
Women's US 9, men's US 7.5.
04What UK size is EU 40?
UK 6.5 – for both women and men.
05Is 40 the same in every brand?
Not quite: brands differ by up to half a size, and some (Birkenstock, Crocs) use their own scale. Check the brand's chart and your foot length in cm.
Check another size
Brand charts can differ by up to half a size.