Reebok to Under Armour Shoe Size Conversion

Switching from Reebok to Under Armour? Reebok runs small and Under Armour runs small, so the size you order stays the same. Here's the full chart.

Reviewed by the 247Sizing teamLast updated: 12 August 2026

Because Reebok and Under Armour share the same fit tendency, your size carries straight across: a Reebok 9.5 is a Under Armour 9.5.

Reebok and Under Armour run the same

Order the same number — a Reebok 9.5 is a Under Armour 9.5.

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

Reebok size	Under Armour size	UK	EU	Foot (cm)
6.5	6.5	5.5	37	23.5
6.5	6.5	5.5	37.5	23.9
7	7	6	38	24.3
7.5	7.5	6.5	38.5	24.7
8	8	7	39.5	25.1
8	8	7	40	25.5
8.5	8.5	7.5	41	25.9
9	9	8	41.5	26.3
9.5	9.5	8.5	42.5	26.7
10	10	9	43	27.1
10.5	10.5	9.5	43.5	27.5
11	11	10	44	27.9
11.5	11.5	10.5	44.5	28.3
12	12	11	45.5	28.7
12.5	12.5	11.5	46	29.1
13	13	12	47	29.5
13.5	13.5	12.5	47.5	29.9
14	14	13	48	30.3
14	14	13	48.5	30.7
14.5	14.5	13.5	49	31.1
15	15	14	49.5	31.5

⚠️ Fit varies by model. Reebok runs about half a size small across many models. Under Armour tends to run about half a size small, especially in performance trainers.

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

What is a Reebok 10.5 in Under Armour?

A Reebok 10.5 is about a Under Armour 10.5 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).

Do Reebok and Under Armour fit the same?

Roughly, yes — both run small, so the same number fits.

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