UK 12 = EU 40

A women’s UK size 12 is EU 40 — the same as French 40. It equals US 8, Italian 44, German 38 and Russian 46; in letter sizes it is usually M.

UK 12 in every size system

UK
12
EU
40
US
8
France (FR)
40
Italy (IT)
44
Germany (DE)
38
Russia (RU)
46
Letter size
M

Sizes around UK 12

UKEUUSFRITDERU
UK 1038638423644
UK 1240840443846
UK 14421042464048

Why size charts disagree

“EU” sizes on most labels follow the French numbering, so UK 10 = EU 38. German brands use numbers 2 lower (UK 10 = DE 36), and some charts call those “EU” too. If a German brand’s 36 fits you, look for 38 at most other brands. Brands also differ slightly, so check the shop’s own chart when you are between sizes.

Full UK to EU size chart →

FAQ

What is UK size 12 in EU?
UK 12 is EU 40 in the standard (French-based) EU sizing. In German sizing it is 38.
What is UK size 12 in US?
UK 12 is US 8. Women’s US sizes are 4 lower than UK sizes.
Is UK 12 small, medium or large?
UK 12 usually corresponds to letter size M, but letter sizes vary between brands.