Brooks to Under Armour Shoe Size Conversion

Switching from Brooks to Under Armour? Brooks runs true to size and Under Armour runs small, so the size you order changes. Here's the full chart.

A Brooks 9 works out to a Under Armour 9.5 — about half a size up. The chart below has every size.

Brooks → Under Armour: size up half a size

A Brooks 9 is a Under Armour 9.5.

Find your Brooks size on the left, read across for Under Armour:

Brooks size	Under Armour size	UK	EU	Foot (cm)
6.5	7	5.5	37	23.5
7	7.5	6	38	24.3
7.5	8	6.5	38.5	24.7
8	8.5	7	39.5	25.1
8.5	9	7.5	41	25.9
9	9.5	8	41.5	26.3
9.5	10	8.5	42.5	26.7
10	10.5	9	43	27.1
10.5	11	9.5	43.5	27.5
11	11.5	10	44	27.9
11.5	12	10.5	44.5	28.3
12	12.5	11	45.5	28.7
12.5	13	11.5	46	29.1
13	13.5	12	47	29.5
13.5	14	12.5	47.5	29.9
14	14.5	13	48	30.3
14.5	15	13.5	49	31.1
15	15.5	14	49.5	31.5

⚠️ Fit varies by model. Brooks runs true to size with a generous toe box; multiple widths are offered. Under Armour tends to run about half a size small, especially in performance trainers.

Under Armour to Brooks → · Brooks chart · Under Armour chart · Brand finder

What is a Brooks 9 in Under Armour?

A Brooks 9 is about a Under Armour 9.5 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).

Do Brooks and Under Armour fit the same?

No — Brooks runs true to size and Under Armour runs small, so size up half a size when you switch.

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