TrueToSize

Convert / Shoes

On to norda shoe size

The short answer

On 5 is norda 6 by the two brands' own charts. 10 of 10 On sizes land on a different label at norda.

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

On 8 sizes the charts land two or more sizes from the same label. Brands do not measure the body the same way, so on those rows treat the chart answer and the same label as the two ends of a range.

Every On size read across to norda. US women's sizes on the left, US women's on the right.
OnOn builds it fornorda, by chartSame labelnorda builds it fornorda also prints
5foot length 22 cm6not publishedfoot length 22 cmUK 3.5 · EU 36 · CM / JP 23
5.5foot length 22.5 cm6.5not publishedfoot length 22.5 cmUK 4 · EU 36 2/3 · CM / JP 23.5
6foot length 23 cm76foot length 23 cmUK 4.5 · EU 37 1/3 · CM / JP 24
6.5foot length 23.5 cm7.56.5foot length 23.5 cmUK 5 · EU 38 · CM / JP 24.5
7foot length 24 cm87foot length 24 cmUK 5.5 · EU 38 2/3 · CM / JP 25
7.5foot length 24.5 cm8.57.5foot length 24.5 cmUK 6 · EU 39 1/3 · CM / JP 25.25
8foot length 25 cm98foot length 25 cmUK 6.5 · EU 40 · CM / JP 25.5
8.5foot length 25.5 cm9.5 or 108.5foot length 25.3 cmUK 7 · EU 40 2/3 · CM / JP 26
9foot length 26 cm10 or 10.59foot length 25.8 cmUK 7.5 · EU 41 1/3 · CM / JP 26.5
9.5foot length 26.5 cm119.5foot length 26.5 cmUK 8.5 · EU 42 2/3 · CM / JP 27.5
10foot length 27 cmnot made10not publishednot published
10.5foot length 27.5 cmnot made10.5not publishednot published
11foot length 28 cmnot made11not publishednot published
12foot length 29 cmnot madenot publishednot publishednot published
Tinted rows change label or sit between two sizes. 4 sizes have no counterpart on the norda 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.

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Sources

norda to On