adidas vs New Balance sizing
An adidas men’s US 9 is made for a foot up to 26.3 cm; a New Balance US 9, up to 27.0 cm, 7 mm longer.
By their charts, New Balance runs larger: its men’s sizes are made for feet about 7 mm longer than adidas’ (the gap grows from 2 mm at US 6 to 12 mm at US 12.5); for the same foot they never give the same men’s size, and New Balance’s is up to 1½ sizes lower.
Men’s: the same foot in adidas and New Balance
They differ most for a 28.5 cm foot: adidas gives US 12, New Balance US 10.5, 1.5 sizes apart.
| Foot length | adidas | New Balance |
|---|---|---|
| 24.0 cm 9.45 in | US 6.5 | US 6 |
| 24.5 cm 9.65 in | US 7 | US 6.5 |
| 25.0 cm 9.84 in | US 7.5 | US 7 |
| 25.5 cm 10.04 in | US 8 | US 7.5 |
| 26.0 cm 10.24 in | US 9 | US 8 |
| 26.5 cm 10.43 in | US 9.5 | US 8.5 |
| 27.0 cm 10.63 in | US 10 | US 9 |
| 27.5 cm 10.83 in | US 10.5 | US 9.5 |
| 28.0 cm 11.02 in | US 11 | US 10 |
| 28.5 cm 11.22 in | US 12 | US 10.5 |
| 29.0 cm 11.42 in | US 12.5 | US 11 |
| 29.5 cm 11.61 in | US 13 | US 11.5 |
| 30.0 cm 11.81 in | US 13.5 | US 12 |
The foot each men’s US size is made for
| US | adidas | New Balance | New Balance − adidas |
|---|---|---|---|
| 4 | 22.1 cm | 22.0 cm | −1.0 mm |
| 4.5 | 22.5 cm | 22.5 cm | 0 mm |
| 5 | 22.9 cm | 23.0 cm | +1.0 mm |
| 5.5 | 23.3 cm | 23.5 cm | +2.0 mm |
| 6 | 23.8 cm | 24.0 cm | +2.0 mm |
| 6.5 | 24.2 cm | 24.5 cm | +3.0 mm |
| 7 | 24.6 cm | 25.0 cm | +4.0 mm |
| 7.5 | 25.0 cm | 25.5 cm | +5.0 mm |
| 8 | 25.5 cm | 26.0 cm | +5.0 mm |
| 8.5 | 25.9 cm | 26.5 cm | +6.0 mm |
| 9 | 26.3 cm | 27.0 cm | +7.0 mm |
| 9.5 | 26.7 cm | 27.5 cm | +8.0 mm |
| 10 | 27.1 cm | 28.0 cm | +9.0 mm |
| 10.5 | 27.6 cm | 28.5 cm | +9.0 mm |
| 11 | 28.0 cm | 29.0 cm | +10.0 mm |
| 11.5 | 28.4 cm | 29.5 cm | +11.0 mm |
| 12 | 28.8 cm | 30.0 cm | +12.0 mm |
| 12.5 | 29.3 cm | 30.5 cm | +12.0 mm |
| 13 | 29.7 cm | 31.0 cm | +13.0 mm |
| 13.5 | 30.1 cm | 31.5 cm | +14.0 mm |
| 14 | 30.5 cm | 32.0 cm | +15.0 mm |
| 15 | 31.4 cm | 33.0 cm | +16.0 mm |
| 16 | 31.8 cm | 34.0 cm | +22.0 mm |
| 17 | 32.6 cm | 35.0 cm | +24.0 mm |
| 18 | 33.5 cm | 36.0 cm | +25.0 mm |
| 19 | 34.3 cm | 37.0 cm | +27.0 mm |
| 20 | 35.2 cm | 38.0 cm | +28.0 mm |
Each brand’s foot length for the size, from its own chart. Over the sizes for feet of 24.0–30.0 cm, New Balance’s are about 7 mm longer on average.
Women’s: the same foot in adidas and New Balance
By their charts, New Balance runs larger: its women’s sizes are made for feet about 4 mm longer than adidas’; for the same foot they give the same women’s size twice out of 12 (one more foot sits within 1 mm of a size line), and New Balance’s is up to a size lower.
They differ most for a 26.0 cm foot: adidas gives US 10, New Balance US 9, a size apart.
| Foot length | adidas | New Balance |
|---|---|---|
| 22.0 cm 8.66 in | US 5 | US 5 |
| 22.5 cm 8.86 in | US 5.5 | US 5.5 |
| 23.0 cm 9.06 in | US 6.5 | US 6 |
| 23.5 cm 9.25 in | US 7 | US 6.5 |
| 24.0 cm 9.45 in | US 7.5 | US 7 |
| 24.5 cm 9.65 in | US 8 | US 7.5 |
| 25.0 cm 9.84 in | US 8.5 | US 8 |
| 25.5 cm 10.04 in | US 9 | US 8.5 |
| 26.0 cm 10.24 in | US 10 | US 9 |
| 26.5 cm 10.43 in | US 10.5 | US 9.5 |
| 27.0 cm 10.63 in | US 11 | US 10 |
| 27.5 cm 10.83 in | US 11.5 | US 10.5 |
The foot each women’s US size is made for
| US | adidas | New Balance | New Balance − adidas |
|---|---|---|---|
| 5 | 22.1 cm | 22.0 cm | −1.0 mm |
| 5.5 | 22.5 cm | 22.5 cm | 0 mm |
| 6 | 22.9 cm | 23.0 cm | +1.0 mm |
| 6.5 | 23.3 cm | 23.5 cm | +2.0 mm |
| 7 | 23.8 cm | 24.0 cm | +2.0 mm |
| 7.5 | 24.2 cm | 24.5 cm | +3.0 mm |
| 8 | 24.6 cm | 25.0 cm | +4.0 mm |
| 8.5 | 25.0 cm | 25.5 cm | +5.0 mm |
| 9 | 25.5 cm | 26.0 cm | +5.0 mm |
| 9.5 | 25.9 cm | 26.5 cm | +6.0 mm |
| 10 | 26.3 cm | 27.0 cm | +7.0 mm |
| 10.5 | 26.7 cm | 27.5 cm | +8.0 mm |
| 11 | 27.1 cm | 28.0 cm | +9.0 mm |
| 11.5 | 27.6 cm | 28.5 cm | +9.0 mm |
| 12 | 28.0 cm | 29.0 cm | +10.0 mm |
| 12.5 | 28.4 cm | 29.5 cm | +11.0 mm |
| 13 | 28.8 cm | 30.0 cm | +12.0 mm |
| 13.5 | 29.3 cm | 30.5 cm | +12.0 mm |
| 14 | 29.7 cm | 31.0 cm | +13.0 mm |
| 15 | 30.5 cm | 32.0 cm | +15.0 mm |
Each brand’s foot length for the size, from its own chart. Over the sizes for feet of 22.0–27.5 cm, New Balance’s are about 4 mm longer on average.
Kids’: the same foot in adidas and New Balance
By their charts, adidas and New Balance size alike (adidas’ sizes are about 1 mm longer): for the same foot they give the same kids’ size 8 times out of 15 (2 more sit within 1 mm of a size line).
They differ most for a 10.0 cm foot: adidas gives US 4k, New Balance US 2.5C, 1.5 sizes apart. K and T kids’ sizes are C sizes; plain kids’ numbers are C or Y by the chart’s order.
| Foot length | adidas | New Balance |
|---|---|---|
| 10.0 cm 3.94 in | US 4k | US 2.5C |
| 11.0 cm 4.33 in | US 5k | US 4C |
| 12.0 cm 4.72 in | US 5.5k | US 5C |
| 13.0 cm 5.12 in | US 6.5k | US 6.5C |
| 14.0 cm 5.51 in | US 7.5k | US 7.5C |
| 15.0 cm 5.91 in | US 9k | US 8.5C |
| 16.0 cm 6.30 in | US 10k | US 10C |
| 17.0 cm 6.69 in | US 11k | US 11C |
| 18.0 cm 7.09 in | US 12.5k | US 12.5C |
| 19.0 cm 7.48 in | US 13.5k | US 13.5C |
| 20.0 cm 7.87 in | US 1.5Y | US 2Y |
| 21.0 cm 8.27 in | US 3Y | US 3Y |
| 22.0 cm 8.66 in | US 4Y | US 4Y |
| 23.0 cm 9.06 in | US 5.5Y | US 5Y |
| 24.0 cm 9.45 in | US 6.5Y | US 6Y |
The foot each kids’ US size is made for
| US | adidas | New Balance | New Balance − adidas |
|---|---|---|---|
| 1C | 8.1 cm | 8.5 cm | +4.0 mm |
| 2C | 9.0 cm | 9.5 cm | +5.0 mm |
| 3C | 9.8 cm | 10.0 cm | +2.0 mm |
| 4C | 10.6 cm | 11.0 cm | +4.0 mm |
| 5C | 11.5 cm | 12.0 cm | +5.0 mm |
| 5.5C | 12.3 cm | 12.0 cm | −3.0 mm |
| 6C | 12.8 cm | 12.5 cm | −3.0 mm |
| 6.5C | 13.2 cm | 13.0 cm | −2.0 mm |
| 7C | 13.6 cm | 13.5 cm | −1.0 mm |
| 7.5C | 14.0 cm | 14.0 cm | 0 mm |
| 8C | 14.5 cm | 14.5 cm | 0 mm |
| 8.5C | 14.9 cm | 15.0 cm | +1.0 mm |
| 9C | 15.3 cm | 15.0 cm | −3.0 mm |
| 9.5C | 15.7 cm | 15.5 cm | −2.0 mm |
| 10C | 16.1 cm | 16.0 cm | −1.0 mm |
| 10.5C | 16.6 cm | 16.5 cm | −1.0 mm |
| 11C | 17.0 cm | 17.0 cm | 0 mm |
| 11.5C | 17.4 cm | 17.5 cm | +1.0 mm |
| 12C | 17.8 cm | 17.5 cm | −3.0 mm |
| 12.5C | 18.3 cm | 18.0 cm | −3.0 mm |
| 13C | 18.7 cm | 18.5 cm | −2.0 mm |
| 13.5C | 19.1 cm | 19.0 cm | −1.0 mm |
| 1Y | 19.5 cm | 19.0 cm | −5.0 mm |
| 1.5Y | 20.0 cm | 19.5 cm | −5.0 mm |
| 2Y | 20.4 cm | 20.0 cm | −4.0 mm |
| 2.5Y | 20.8 cm | 20.5 cm | −3.0 mm |
| 3Y | 21.2 cm | 21.0 cm | −2.0 mm |
| 3.5Y | 21.6 cm | 21.5 cm | −1.0 mm |
| 4Y | 22.1 cm | 22.0 cm | −1.0 mm |
| 4.5Y | 22.5 cm | 22.5 cm | 0 mm |
| 5Y | 22.9 cm | 23.0 cm | +1.0 mm |
| 5.5Y | 23.3 cm | 23.5 cm | +2.0 mm |
| 6Y | 23.8 cm | 24.0 cm | +2.0 mm |
| 6.5Y | 24.2 cm | 24.5 cm | +3.0 mm |
| 7Y | 24.6 cm | 25.0 cm | +4.0 mm |
Each brand’s foot length for the size, from its own chart. Over the sizes for feet of 10.0–24.0 cm, within 2.5 mm on average: the same length.
adidas and New Balance charts side by side
New Balance’s women’s sizes go up to US 16, adidas’ to 15.5; adidas prints EU sizes in thirds (42⅔), New Balance in halves (42.5).
| On the charts | adidas | New Balance |
|---|---|---|
| Men’s US sizes | 4–20 | 2.5–20 |
| Women’s US sizes | 5–15.5 | 3–16 |
| Men’s and women’s | separate charts | separate charts |
| Kids’ sizes | 1C–7.5Y | 0C–7Y |
| EU sizes | in thirds (42⅔) | in halves (42.5) |
| Sizes with a foot length | 86 of 86 | 95 of 95 |
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, New Balance and every brand we have, each from its own chart.
From each brand’s own charts: adidas (men’s and women’s), adidas (kids’), New Balance; 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.