How do sizes at calvin klein compare to those at J Crew?

I am a medium for shirts with J Crew apparel, but I'm not sure with Calvin Klein. I want to order a hoodie online from calvin klein so do you think a medium sized one be okay? Or how do shirts from j crew tend to run? Oh yeah I'm talking about men's clothing.|||For womens, I think they're almost similar. But one time I called a company and they told me the exact measurements of a top-then I could tell if it would fit or not. So you can call them, or online chat if they have that