What is US size 40?

French size 40 is usually an American medium or American size 10.

What size is ladies size 40?

If you ask yourself, what size is a 30 inch waist in women’s jeans, then use this chart to find out that it corresponds to a US Size 12 or EU 40.

Is a 40 a size 9 shoe?

If you’ve ever wondered “What size shoe is a 38?” (It is a men’s size 7.5 in the US) or “What is a size 40 in shoes?” (that’d be a US men’s size 9.5), read on to learn how to measure shoe sizes in different countries.