Every Nike conversion below is verified against the brand's official size chart.
Men's size conversions
US 3.5 — women's US 5, UK 3, EU 35.5
US 4 — women's US 5.5, UK 3.5, EU 36
US 4.5 — women's US 6, UK 4, EU 36.5
US 5 — women's US 6.5, UK 4.5, EU 37.5
US 5.5 — women's US 7, UK 5, EU 38
US 6 — women's US 7.5, UK 5.5, EU 38.5
US 6.5 — women's US 8, UK 6, EU 39
US 7 — women's US 8.5, UK 6, EU 40
US 7.5 — women's US 9, UK 6.5, EU 40.5
US 8 — women's US 9.5, UK 7, EU 41
US 8.5 — women's US 10, UK 7.5, EU 42
US 9 — women's US 10.5, UK 8, EU 42.5
US 9.5 — women's US 11, UK 8.5, EU 43
US 10 — women's US 11.5, UK 9, EU 44
US 10.5 — women's US 12, UK 9.5, EU 44.5
US 11 — women's US 12.5, UK 10, EU 45
US 11.5 — women's US 13, UK 10.5, EU 45.5
US 12 — women's US 13.5, UK 11, EU 46
US 12.5 — women's US 14, UK 11.5, EU 47
Women's size conversions
US 4 — men's US 2.5, UK 1.5, EU 34.5
US 4.5 — men's US 3, UK 2, EU 35
US 5 — men's US 3.5, UK 2.5, EU 35.5
US 5.5 — men's US 4, UK 3, EU 36
US 6 — men's US 4.5, UK 3.5, EU 36.5
US 6.5 — men's US 5, UK 4, EU 37.5
US 7 — men's US 5.5, UK 4.5, EU 38
US 7.5 — men's US 6, UK 5, EU 38.5
US 8 — men's US 6.5, UK 5.5, EU 39
US 8.5 — men's US 7, UK 6, EU 40
US 9 — men's US 7.5, UK 6.5, EU 40.5
US 9.5 — men's US 8, UK 7, EU 41
US 10 — men's US 8.5, UK 7.5, EU 42
US 10.5 — men's US 9, UK 8, EU 42.5
US 11 — men's US 9.5, UK 8.5, EU 43
US 11.5 — men's US 10, UK 9, EU 44
US 12 — men's US 10.5, UK 9.5, EU 44.5
If you normally wear another brand
Anchored on your ASICS size:
- Asics: Baseline — true to size. One of the roomier toeboxes in running; wide widths on core models.
- On: Same size. Narrow-to-medium fit; go up half in waterproof models.
- HOKA: Half size up. Runs about a half size short of Asics, with a snug, tapered toebox.
- Adidas: Same size; half up for wide feet. Race lines run long and narrow.
- Salomon: Half size up in Speedcross. European last — narrow and precise; Sense Ride fits truer.
- norda: Half size up in 001 and 005; full size up in 002 and 003. The brand's own guidance — follow it.
Common questions
What is a men's US 9 in Nike in EU sizing? On Nike's chart above, a men's US 9 is a UK 8 and an EU 42.5.
What is a women's US 8 in Nike men's sizing? On Nike's chart above, a women's US 8 is a men's US 6.5, UK 5.5 and EU 39.
You will also find these charts on every Nike product page on enroute.run, right beside the shoe you are looking at.