Could I wear size 14 skate shoes?

I am 15 and a half years old. I thought I was size 15. I wore size 15 Vans Trujillo Shoes all last year and now, I think I have like an inch of room in them; like I can scoot my foot back and forth, and it pretty roomy. And for BMX I wear my size 14 Circa shoes, that feel fine, and without socks they feel even roomier. So do you think I could wear size 14 in other shoes, like Nike SB or 6.0?