Brooks vs Nike Shoe Size Comparison

Nike runs about 1 US size smaller than Brooks, so you may need to size up. The gap is about 6mm in measured shoe length plus each brand fit bias. Use the table below to convert any Brooks US size to a starting size in Nike, with UK, EU and CM alongside.

Brooks to Nike size chart

Brooks US men size mapped to a starting size in Nike, with UK, EU and CM.
Brooks US Nike US Nike range Nike UK Nike EU Nike CM
7 8 6.5-9 7 38 25
8 9 7.5-10 8 39 26
9 10 8.5-11 9 40 27
10 11 9.5-12 10 42 27.5
11 12 10.5-13 11 43 28.5
12 13 11.5-14 12 44 29.5
13 14 12.5-15 13 45 30.5

Data confidence

Why Brooks and Nike differ

That works out to roughly 6mm of real shoe length. We map every size through foot length in millimetres and then re-apply each brand empirical fit offset, so the comparison reflects how the shoes actually fit rather than how they are labelled.

Brand-level estimate: per-model fit can vary by a full size or more within a brand.