Nike vs Brooks Shoe Size Comparison

Brooks runs about 0.5 sizes smaller than Nike, so start by checking up from your usual size. The estimate uses a fit-offset difference of about 6mm plus each brand's fit evidence — not the size labels alone. Use the table below to convert any Nike US size to a starting size in Brooks, with UK, EU and CM alongside.

Nike → Brooks size chart

Nike US men's size mapped to a starting size in Brooks, with UK, EU and CM.
Nike US Brooks US Brooks range Brooks UK Brooks EU Brooks CM
7 6 5–7.5 5 36 24
8 7 6–8.5 6 37 25
9 8 7–9.5 7 38 25.5
10 9 8–10.5 8 40 26.5
11 10 9–11.5 9 41 27.5
12 11 10–12.5 10 42 28
13 12 11–13.5 11 43 29

Data confidence

Why Nike and Brooks differ

Nike runs ~0.5 size smaller than Brooks.

That works out to roughly 6mm of real shoe length. We map every size through foot length in millimetres — the canonical axis — and then re-apply each brand's 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. See how we calculate for how we measure fit offsets.