TrueToSize

Convert / Shoes

Nike to On shoe size

The short answer

Nike 11.5 is On 11 or 12 by the two brands' own charts. 2 of 16 Nike sizes land on a different label at On.

Both brands publish the foot length each size is built for, so every row matches a foot, not a label.

Every Nike size read across to On. US women's sizes on the left, US women's on the right.
NikeNike builds it forOn, by chartSame labelOn builds it forOn also prints
5foot length 22 cm55foot length 22 cmUK 3 · EU 36 · CM / JP 22
5.5foot length 22.5 cm5.55.5foot length 22.5 cmUK 3.5 · EU 36.5 · CM / JP 22.5
6foot length 23 cm66foot length 23 cmUK 4 · EU 37 · CM / JP 23
6.5foot length 23.5 cm6.56.5foot length 23.5 cmUK 4.5 · EU 37.5 · CM / JP 23.5
7foot length 24 cm77foot length 24 cmUK 5 · EU 38 · CM / JP 24
7.5foot length 24.5 cm7.57.5foot length 24.5 cmUK 5.5 · EU 38.5 · CM / JP 24.5
8foot length 25 cm88foot length 25 cmUK 6 · EU 39 · CM / JP 25
8.5foot length 25.5 cm8.58.5foot length 25.5 cmUK 6.5 · EU 40 · CM / JP 25.5
9foot length 26 cm99foot length 26 cmUK 7 · EU 40.5 · CM / JP 26
9.5foot length 26.5 cm9.59.5foot length 26.5 cmUK 7.5 · EU 41 · CM / JP 26.5
10foot length 27 cm1010foot length 27 cmUK 8 · EU 42 · CM / JP 27
10.5foot length 27.5 cm10.510.5foot length 27.5 cmUK 8.5 · EU 42.5 · CM / JP 27.5
11foot length 28 cm1111foot length 28 cmUK 9 · EU 43 · CM / JP 28
11.5foot length 28.5 cm11 or 12not publishedfoot length 28 cmUK 9 · EU 43 · CM / JP 28
12foot length 29 cm1212foot length 29 cmUK 10 · EU 44 · CM / JP 29
12.5foot length 29.5 cm12not publishedfoot length 29 cmUK 10 · EU 44 · CM / JP 29
13foot length 30 cmnot madenot publishednot publishednot published
Tinted rows change label or sit between two sizes. 1 sizes have no counterpart on the On chart. Read from the two charts only; no formula and no averaging.

What wearers say

Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.

Open in the converterAdd an item you own

Sources

On to Nike