TrueToSize

Convert / Shoes

On to Brooks shoe size

The short answer

On 8.5 is Brooks 8.5 by the two brands' own charts. 0 of 14 On sizes land on a different label at Brooks.

At least one of the two brands publishes no foot length, so the rows line up the US size both charts print. Treat it as the label conversion, not a fit.

Every On size read across to Brooks. US women's sizes on the left, US women's on the right.
OnOn builds it forBrooks, by chartSame labelBrooks builds it forBrooks also prints
5foot length 22 cm5not publishednot publishedUK 3 · EU 35.5
5.5foot length 22.5 cm5.5not publishednot publishedUK 3.5 · EU 36
6foot length 23 cm6not publishednot publishedUK 4 · EU 36.5
6.5foot length 23.5 cm6.5not publishednot publishedUK 4.5 · EU 37.5
7foot length 24 cm7not publishednot publishedUK 5 · EU 38
7.5foot length 24.5 cm7.5not publishednot publishedUK 5.5 · EU 38.5
8foot length 25 cm8not publishednot publishedUK 6 · EU 39
8.5foot length 25.5 cm8.5not publishednot publishedUK 6.5 · EU 40
9foot length 26 cm9not publishednot publishedUK 7 · EU 40.5
9.5foot length 26.5 cm9.5not publishednot publishedUK 7.5 · EU 41
10foot length 27 cm10not publishednot publishedUK 8 · EU 42
10.5foot length 27.5 cm10.5not publishednot publishedUK 8.5 · EU 42.5
11foot length 28 cm11not publishednot publishedUK 9 · EU 43
12foot length 29 cm12not publishednot publishedUK 10 · EU 44.5
Tinted rows change label or sit between two sizes. 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

Brooks to On