In general, Converse fit bigger than your average shoe. On their site, the brand states that Converse fit a half size bigger but some people say to go down a full size, especially if you wear a larger size to start with.

Should I size down in Converse?

As mentioned above, Converse Chuck Taylors run about a half size larger than your normal shoe size, so sizing down a half size when you buy Chucks is probably best.

Are Converse lift true to size?

True to size--just a little large in the heel area; slides up and down, but can be fixed with an insert. Very cute--bombarded with compliments the first time I wore them.