UGG to Under Armour Shoe Size Conversion

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

A UGG 8.5 works out to a Under Armour 9.5 — about a full size up. The chart below has every size.

UGG → Under Armour: size up a full size

A UGG 8.5 is a Under Armour 9.5.

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

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

⚠️ Fit varies by model. UGG runs about half a size large and moulds to the foot — size down half, or a full size for slippers. Under Armour tends to run about half a size small, especially in performance trainers.

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

What is a UGG 8.5 in Under Armour?

A UGG 8.5 is about a Under Armour 9.5 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).

Do UGG and Under Armour fit the same?

No — UGG runs large and Under Armour runs small, so size up a full size when you switch.

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