Crocs to Under Armour Shoe Size Conversion

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

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

Crocs → Under Armour: size up half a size

A Crocs 9 is a Under Armour 9.5.

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

Crocs 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. Crocs are sized in unisex M/W and run roomy — between sizes, size down. Under Armour tends to run about half a size small, especially in performance trainers.

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

What is a Crocs 9 in Under Armour?

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

Do Crocs and Under Armour fit the same?

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

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