Nike vs adidas shoe size
By the length each brand lists, Nike men's US 9 lines up with adidas US 9. 24 of 29 men's sizes match the same US number.
Men's sizes
24 of 29 matched men's rows are the same US size. The median length difference is 1 mm (adidas longer) on the measured foot length scale. The biggest gap is 3 mm at Nike US 20.
| Nike US | EU | UK | cm | adidas US | EU | UK | cm | Diff |
|---|---|---|---|---|---|---|---|---|
| 4 | 36 | 3.5 | 22 | 4 | 36 | 3.5 | 22.1 | +1 mm |
| 4.5 | 36.5 | 4 | 22.4 | 4.5 | 36 2/3 | 4 | 22.5 | +1 mm |
| 5 | 37.5 | 4.5 | 22.9 | 5 | 37 1/3 | 4.5 | 22.9 | 0 |
| 5.5 | 38 | 5 | 23.3 | 5.5 | 38 | 5 | 23.3 | 0 |
| 6 | 38.5 | 5.5 | 23.7 | 6 | 38 2/3 | 5.5 | 23.8 | +1 mm |
| 6.5 | 39 | 6 | 24.1 | 6.5 | 39 1/3 | 6 | 24.2 | +1 mm |
| 7 | 40 | 6 | 24.5 | 7 | 40 | 6.5 | 24.6 | +1 mm |
| 7.5 | 40.5 | 6.5 | 25 | 7.5 | 40 2/3 | 7 | 25 | 0 |
| 8 | 41 | 7 | 25.4 | 8 | 41 1/3 | 7.5 | 25.5 | +1 mm |
| 8.5 | 42 | 7.5 | 25.8 | 8.5 | 42 | 8 | 25.9 | +1 mm |
| 9 | 42.5 | 8 | 26.2 | 9 | 42 2/3 | 8.5 | 26.3 | +1 mm |
| 9.5 | 43 | 8.5 | 26.7 | 9.5 | 43 1/3 | 9 | 26.7 | 0 |
| 10 | 44 | 9 | 27.1 | 10 | 44 | 9.5 | 27.1 | 0 |
| 10.5 | 44.5 | 9.5 | 27.5 | 10.5 | 44 2/3 | 10 | 27.6 | +1 mm |
| 11 | 45 | 10 | 27.9 | 11 | 45 1/3 | 10.5 | 28 | +1 mm |
| 11.5 | 45.5 | 10.5 | 28.3 | 11.5 | 46 | 11 | 28.4 | +1 mm |
| 12 | 46 | 11 | 28.8 | 12 | 46 2/3 | 11.5 | 28.8 | 0 |
| 12.5 | 47 | 11.5 | 29.2 | 12.5 | 47 1/3 | 12 | 29.3 | +1 mm |
| 13 | 47.5 | 12 | 29.6 | 13 | 48 | 12.5 | 29.7 | +1 mm |
| 13.5 | 48 | 12.5 | 30 | 13.5 | 48 2/3 | 13 | 30.1 | +1 mm |
| 14 | 48.5 | 13 | 30.5 | 14 | 49 1/3 | 13.5 | 30.5 | 0 |
| 14.5 | 49 | 13.5 | 30.9 | 14.5 | 50 | 14 | 31 | +1 mm |
| 15 | 49.5 | 14 | 31.3 | 15 | 50 2/3 | 14.5 | 31.4 | +1 mm |
| 15.5 | 50 | 14.5 | 31.7 | 16 | 51 1/3 | 15 | 31.8 | +1 mm |
| 16.5 | 51 | 15.5 | 32.6 | 17 | 52 2/3 | 16 | 32.6 | 0 |
| 17.5 | 52 | 16.5 | 33.4 | 18 | 53 1/3 | 17 | 33.5 | +1 mm |
| 18.5 | 53 | 17.5 | 34.3 | 19 | 54 2/3 | 18 | 34.3 | 0 |
| 19.5 | 54 | 18.5 | 35.1 | 20 | 55 2/3 | 19 | 35.2 | +1 mm |
| 20 | 54.5 | 19 | 35.5 | 20 | 55 2/3 | 19 | 35.2 | −3 mm |
Sources: Nike, www.nike.com (checked 2026-10-24) · adidas, support.dtb.adidas.com (checked 2026-10-24)
Women's sizes
22 of 22 matched women's rows are the same US size. The median length difference is 1 mm (adidas longer) on the measured foot length scale. The biggest gap is 1 mm at Nike US 5.
| Nike US | EU | UK | cm | adidas US | EU | UK | cm | Diff |
|---|---|---|---|---|---|---|---|---|
| 5 | 35.5 | 2.5 | 22 | 5 | 36 | 3.5 | 22.1 | +1 mm |
| 5.5 | 36 | 3 | 22.4 | 5.5 | 36 2/3 | 4 | 22.5 | +1 mm |
| 6 | 36.5 | 3.5 | 22.9 | 6 | 37 1/3 | 4.5 | 22.9 | 0 |
| 6.5 | 37.5 | 4 | 23.3 | 6.5 | 38 | 5 | 23.3 | 0 |
| 7 | 38 | 4.5 | 23.7 | 7 | 38 2/3 | 5.5 | 23.8 | +1 mm |
| 7.5 | 38.5 | 5 | 24.1 | 7.5 | 39 1/3 | 6 | 24.2 | +1 mm |
| 8 | 39 | 5.5 | 24.5 | 8 | 40 | 6.5 | 24.6 | +1 mm |
| 8.5 | 40 | 6 | 25 | 8.5 | 40 2/3 | 7 | 25 | 0 |
| 9 | 40.5 | 6.5 | 25.4 | 9 | 41 1/3 | 7.5 | 25.5 | +1 mm |
| 9.5 | 41 | 7 | 25.8 | 9.5 | 42 | 8 | 25.9 | +1 mm |
| 10 | 42 | 7.5 | 26.2 | 10 | 42 2/3 | 8.5 | 26.3 | +1 mm |
| 10.5 | 42.5 | 8 | 26.7 | 10.5 | 43 1/3 | 9 | 26.7 | 0 |
| 11 | 43 | 8.5 | 27.1 | 11 | 44 | 9.5 | 27.1 | 0 |
| 11.5 | 44 | 9 | 27.5 | 11.5 | 44 2/3 | 10 | 27.6 | +1 mm |
| 12 | 44.5 | 9.5 | 27.9 | 12 | 45 1/3 | 10.5 | 28 | +1 mm |
| 12.5 | 45 | 10 | 28.3 | 12.5 | 46 | 11 | 28.4 | +1 mm |
| 13 | 45.5 | 10.5 | 28.8 | 13 | 46 2/3 | 11.5 | 28.8 | 0 |
| 13.5 | 46 | 11 | 29.2 | 13.5 | 47 1/3 | 12 | 29.3 | +1 mm |
| 14 | 47 | 11.5 | 29.6 | 14 | 48 | 12.5 | 29.7 | +1 mm |
| 14.5 | 47.5 | 12 | 30 | 14.5 | 48 2/3 | 13 | 30.1 | +1 mm |
| 15 | 48 | 12.5 | 30.5 | 15 | 49 1/3 | 13.5 | 30.5 | 0 |
| 15.5 | 48.5 | 13 | 30.9 | 15.5 | 50 | 14 | 31 | +1 mm |
Sources: Nike, www.nike.com (checked 2026-10-24) · adidas, support.dtb.adidas.com (checked 2026-10-24)
Convert your exact size
What a chart comparison cannot tell you
Both tables come from brand-wide size charts. They do not capture the shape of a particular model, its width or how it wears. Check the fit notes on the Nike size chart and the adidas size chart before you buy.