UK 2.5 in US and EU sizes

An adult UK 2.5 is a men’s US 3.5 and a women’s US 5 (EU 34–34.5), for a foot of 21.2 to 21.6 cm.

A kids’ UK 2.5 is much smaller: a kids’ US 2.5C–3C, for a foot of 10.2 to 10.6 cm.

On the brands’ own men’s charts, UK 2.5 is US 3.5 at Brooks, Saucony and Teva; US 3 at New Balance. Brands size their shoes on their own lasts, so check the brand you’re buying.

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Sizes for

UK 2.5 in every size system

SystemMen’s (adult UK 2.5)Women’s (adult UK 2.5)Kids (kids’ UK 2.5)
Foot length (cm)21.2–21.621.2–21.610.2–10.6
US3.552.5C–3C
EU34–34.534–34.517.5–18
Mondopoint (mm)215–220215–220105–110
Japan (cm)21.5–2221.5–2210.5–11
Australia and NZ2.552.5
South Korea (mm)215–220215–220105–110
China (mm)215–220215–220105–110
Mexico (cm)21.5–2221.5–2210.5–11
Brazil32–3332–3316
Argentina, Uruguay, Paraguay33–3433–3417

From the standard size tables. A size fits a range of feet; where that range spans two sizes in another system, both are shown. A dash means the system has no size there.

What 27 brands print next to UK 2.5

BrandMen’s chartWomen’s chartKids’ chart
adidas——US 3UK 2.5 · EU 35
Allbirds—US 5.5UK 2.5—
ANTA—US 5UK 2.5 · EU 35.5US 3YUK 2.5 · EU 35
Bata—EU 35UK 2.5EU 35UK 2.5
Birkenstock—EU 35US 4-4.5 · UK 2.5EU 35US 4-4.5 · UK 2.5
BrooksUS 3.5UK 2.5 · EU 35.5——
Clarks——UK 2.5EU 18
Converse——US 2.5CUK 2.5 · EU 18.5
Dr. Martens——UK 2.5US 3.5 · EU 35
Golden Goose——EU 18US 3 · UK 2.5
Gucci—EU 35.5UK 2.5—
Jordan—US 5UK 2.5 · EU 35.5US 3CUK 2.5 · EU 18.5
KEEN—US 5UK 2.5 · EU 35—
Liberty—UK 2.5US 3.5 · EU 35UK 2.5US 3.5 · EU 35
Merrell—US 5UK 2.5 · EU 35US 3UK 2.5 · EU 18
New BalanceUS 3UK 2.5 · EU 35US 4.5UK 2.5 · EU 34.5US 3UK 2.5 · EU 18.5
Nike—US 5UK 2.5 · EU 35.5US 3CUK 2.5 · EU 18.5
PUMA——US 3.5UK 2.5 · EU 35
Salomon——EU 35US 3 · UK 2.5
SauconyUS 3.5UK 2.5 · EU 35.5US 5UK 2.5 · EU 35.53.5 Big KidsUS 3.5 · UK 2.5 · EU 35.5
Skechers—US 5.5UK 2.5 · EU 35.5—
TevaUS 3.5UK 2.5 · EU 34.5US 4.5UK 2.5 · EU 35.5—
Timberland——US 3UK 2.5 · EU 18.5
UGG——US 3UK 2.5 · EU 18.5
Under Armour——US 3KUK 2.5 · EU 18.5
VansEU 34.5UK 2.5EU 34.5US 5 · UK 2.5US 3CUK 2.5 · EU 18
Zara——US 3UK 2.5 · EU 17/18

The row each brand’s own chart prints for UK 2.5, linked. Brands without that exact size on a chart are left out. Not affiliated with any brand.

Size tables checked 2026-10-23; brand sizes from each brand’s own chart, linked above. An estimate to help you choose: fit varies by brand and model. Not medical advice.