Dr. Martens to Under Armour Shoe Size Conversion

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

Reviewed by the 247Sizing teamLast updated: 12 August 2026

Under Armour runs 1 size larger than Dr. Martens, so you may need to size down when switching.

Size down 1 moving to Under Armour

Under Armour runs larger — order half a size smaller than your Dr. Martens size.

Find your Dr. Martens size on the left, read across for Under Armour:

Dr. Martens size	Under Armour size	UK	EU	Foot (cm)
6.5	7.5	5.5	37	23.5
6.5	7.5	5.5	37.5	23.9
7	8	6	38	24.3
7.5	8.5	6.5	38.5	24.7
8	9	7	39.5	25.1
8	9	7	40	25.5
8.5	9.5	7.5	41	25.9
9	10	8	41.5	26.3
9.5	10.5	8.5	42.5	26.7
10	11	9	43	27.1
10.5	11.5	9.5	43.5	27.5
11	12	10	44	27.9
11.5	12.5	10.5	44.5	28.3
12	13	11	45.5	28.7
12.5	13.5	11.5	46	29.1
13	14	12	47	29.5
13.5	14.5	12.5	47.5	29.9
14	15	13	48	30.3
14	15	13	48.5	30.7
14.5	15.5	13.5	49	31.1
15	16	14	49.5	31.5

⚠️ Fit varies by model. Dr. Martens runs about half to a full size large and has no half sizes — size down to the nearest whole. Under Armour tends to run about half a size small, especially in performance trainers.

Under Armour to Dr. Martens → · Dr. Martens chart · Under Armour chart · Brand finder

What is a Dr. Martens 10.5 in Under Armour?

A Dr. Martens 10.5 is about a Under Armour 11.5 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).

Do Dr. Martens and Under Armour fit the same?

Not quite — Under Armour runs about 1 size larger than Dr. Martens.

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