adidas vs Nike sizing

An adidas men’s US 9 is made for a foot up to 26.3 cm; a Nike US 9, up to 26.2 cm, 1 mm shorter.

By their charts, adidas and Nike size alike (adidas’ sizes are about 1 mm longer): for the same foot they give the same men’s size 11 times out of 13 (2 more sit within 1 mm of a size line).

Men’s: the same foot in adidas and Nike

They differ most for a 25.5 cm foot: adidas gives US 8, Nike US 8.5, half a size apart.

Foot lengthadidasNike
24.0 cm 9.45 inUS 6.5US 6.5
24.5 cm 9.65 inUS 7US 7
25.0 cm 9.84 inUS 7.5US 7.5
25.5 cm 10.04 inUS 8US 8.5
26.0 cm 10.24 inUS 9US 9
26.5 cm 10.43 inUS 9.5US 9.5
27.0 cm 10.63 inUS 10US 10
27.5 cm 10.83 inUS 10.5US 10.5
28.0 cm 11.02 inUS 11US 11.5
28.5 cm 11.22 inUS 12US 12
29.0 cm 11.42 inUS 12.5US 12.5
29.5 cm 11.61 inUS 13US 13
30.0 cm 11.81 inUS 13.5US 13.5
The foot each men’s US size is made for
USadidasNikeNike − adidas
422.1 cm22.0 cm−1.0 mm
4.522.5 cm22.4 cm−1.0 mm
522.9 cm22.9 cm0 mm
5.523.3 cm23.3 cm0 mm
623.8 cm23.7 cm−1.0 mm
6.524.2 cm24.1 cm−1.0 mm
724.6 cm24.5 cm−1.0 mm
7.525.0 cm25.0 cm0 mm
825.5 cm25.4 cm−1.0 mm
8.525.9 cm25.8 cm−1.0 mm
926.3 cm26.2 cm−1.0 mm
9.526.7 cm26.7 cm0 mm
1027.1 cm27.1 cm0 mm
10.527.6 cm27.5 cm−1.0 mm
1128.0 cm27.9 cm−1.0 mm
11.528.4 cm28.3 cm−1.0 mm
1228.8 cm28.8 cm0 mm
12.529.3 cm29.2 cm−1.0 mm
1329.7 cm29.6 cm−1.0 mm
13.530.1 cm30.0 cm−1.0 mm
1430.5 cm30.5 cm0 mm
14.531.0 cm30.9 cm−1.0 mm
1531.4 cm31.3 cm−1.0 mm
1631.8 cm32.2 cm+4.0 mm
1732.6 cm33.0 cm+4.0 mm
1833.5 cm33.9 cm+4.0 mm
1934.3 cm34.7 cm+4.0 mm
2035.2 cm35.5 cm+3.0 mm

Each brand’s foot length for the size, from its own chart. Over the sizes for feet of 24.0–30.0 cm, within 2.5 mm on average: the same length.

Women’s: the same foot in adidas and Nike

By their charts, adidas and Nike size alike (adidas’ sizes are about 1 mm longer): for the same foot they give the same women’s size 10 times out of 12 (2 more sit within 1 mm of a size line).

They differ most for a 22.5 cm foot: adidas gives US 5.5, Nike US 6, half a size apart.

Foot lengthadidasNike
22.0 cm 8.66 inUS 5US 5
22.5 cm 8.86 inUS 5.5US 6
23.0 cm 9.06 inUS 6.5US 6.5
23.5 cm 9.25 inUS 7US 7
24.0 cm 9.45 inUS 7.5US 7.5
24.5 cm 9.65 inUS 8US 8
25.0 cm 9.84 inUS 8.5US 8.5
25.5 cm 10.04 inUS 9US 9.5
26.0 cm 10.24 inUS 10US 10
26.5 cm 10.43 inUS 10.5US 10.5
27.0 cm 10.63 inUS 11US 11
27.5 cm 10.83 inUS 11.5US 11.5
The foot each women’s US size is made for
USadidasNikeNike − adidas
522.1 cm22.0 cm−1.0 mm
5.522.5 cm22.4 cm−1.0 mm
622.9 cm22.9 cm0 mm
6.523.3 cm23.3 cm0 mm
723.8 cm23.7 cm−1.0 mm
7.524.2 cm24.1 cm−1.0 mm
824.6 cm24.5 cm−1.0 mm
8.525.0 cm25.0 cm0 mm
925.5 cm25.4 cm−1.0 mm
9.525.9 cm25.8 cm−1.0 mm
1026.3 cm26.2 cm−1.0 mm
10.526.7 cm26.7 cm0 mm
1127.1 cm27.1 cm0 mm
11.527.6 cm27.5 cm−1.0 mm
1228.0 cm27.9 cm−1.0 mm
12.528.4 cm28.3 cm−1.0 mm
1328.8 cm28.8 cm0 mm
13.529.3 cm29.2 cm−1.0 mm
1429.7 cm29.6 cm−1.0 mm
14.530.1 cm30.0 cm−1.0 mm
1530.5 cm30.5 cm0 mm
15.531.0 cm30.9 cm−1.0 mm

Each brand’s foot length for the size, from its own chart. Over the sizes for feet of 22.0–27.5 cm, within 2.5 mm on average: the same length.

Kids’: the same foot in adidas and Nike

By their charts, Nike runs larger: its kids’ sizes are made for feet about 5 mm longer than adidas’ (the gap narrows from 10 mm at US 3C to 1 mm at US 6.5Y); for the same foot they give the same kids’ size twice out of 15 (one more foot sits within 1 mm of a size line), and Nike’s is up to 2 sizes lower.

They differ most for a 10.0 cm foot: adidas gives US 4k, Nike US 2C, 2 sizes apart. K and T kids’ sizes are C sizes; plain kids’ numbers are C or Y by the chart’s order.

Foot lengthadidasNike
10.0 cm 3.94 inUS 4kUS 2C
11.0 cm 4.33 inUS 5kUS 4C
12.0 cm 4.72 inUS 5.5kUS 5C
13.0 cm 5.12 inUS 6.5kUS 6C
14.0 cm 5.51 inUS 7.5kUS 7C
15.0 cm 5.91 inUS 9kUS 8C
16.0 cm 6.30 inUS 10kUS 10C
17.0 cm 6.69 inUS 11kUS 10.5C
18.0 cm 7.09 inUS 12.5kUS 12C
19.0 cm 7.48 inUS 13.5kUS 13C
20.0 cm 7.87 inUS 1.5YUS 1Y
21.0 cm 8.27 inUS 3YUS 2.5Y
22.0 cm 8.66 inUS 4YUS 3.5Y
23.0 cm 9.06 inUS 5.5YUS 5Y
24.0 cm 9.45 inUS 6.5YUS 6.5Y
The foot each kids’ US size is made for
USadidasNikeNike − adidas
1C8.1 cm9.1 cm+10.0 mm
2C9.0 cm10.0 cm+10.0 mm
3C9.8 cm10.8 cm+10.0 mm
4C10.6 cm11.6 cm+10.0 mm
5C11.5 cm12.5 cm+10.0 mm
6C12.8 cm13.3 cm+5.0 mm
7C13.6 cm14.2 cm+6.0 mm
8C14.5 cm15.0 cm+5.0 mm
9C15.3 cm15.9 cm+6.0 mm
10C16.1 cm16.7 cm+6.0 mm
10.5C16.6 cm17.1 cm+5.4 mm
11C17.0 cm17.6 cm+6.2 mm
11.5C17.4 cm17.9 cm+5.4 mm
12C17.8 cm18.4 cm+6.1 mm
12.5C18.3 cm18.9 cm+5.9 mm
13C18.7 cm19.2 cm+5.1 mm
13.5C19.1 cm19.7 cm+5.8 mm
1Y19.5 cm20.1 cm+6.0 mm
1.5Y20.0 cm20.5 cm+5.0 mm
2Y20.4 cm20.9 cm+5.0 mm
2.5Y20.8 cm21.4 cm+6.0 mm
3Y21.2 cm21.8 cm+6.0 mm
3.5Y21.6 cm22.2 cm+6.0 mm
4Y22.1 cm22.4 cm+3.0 mm
4.5Y22.5 cm22.7 cm+2.0 mm
5Y22.9 cm23.2 cm+3.0 mm
5.5Y23.3 cm23.5 cm+2.0 mm
6Y23.8 cm23.8 cm0 mm
6.5Y24.2 cm24.3 cm+1.0 mm
7Y24.6 cm24.6 cm0 mm

Each brand’s foot length for the size, from its own chart. Over the sizes for feet of 10.0–24.0 cm, Nike’s are about 5 mm longer on average.

adidas and Nike charts side by side

Nike makes men’s sizes up to US 22, adidas up to 20; Nike’s women’s sizes go up to US 22.5, adidas’ to 15.5; adidas prints EU sizes in thirds (42⅔), Nike in halves (42.5).

On the chartsadidasNike
Men’s US sizes4–203.5–22
Women’s US sizes5–15.53.5–22.5
Men’s and women’sseparate chartsseparate charts
Kids’ sizes1C–7.5Y1C–7Y
EU sizesin thirds (42⅔)in halves (42.5)
Sizes with a foot length86 of 86142 of 153

Shoe charts only (not socks or boots), as each brand prints them; a unisex chart counts as men’s, with the women’s sizes it prints beside them.

Your size in both, and every other brand

Type your foot length: the result lists adidas, Nike and every brand we have, each from its own chart.

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Heel to the tip of your longest toe, standing. 8 to 35 cm.

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Sizes for

From each brand’s own charts: adidas (men’s and women’s), adidas (kids’), Nike (men’s), Nike (women’s), Nike (kids’); checked 2026-10-23. Each foot is sized as our calculator does: the first size whose foot length on the brand’s chart covers it, shown as the brand prints it (its own label where it prints no US size). This compares the brands’ charts by length only, not width or how a particular model fits. Not affiliated with either brand.