US sizes for t-shirts

So i wanna get a WASD shirt from the store, but i am unsure about what size to choose. I know that US sizes are different than EU ones but by how much i don't know.

I am a 182cm (6'0ft) 82kg (180lbs) normal built male and I normally wear medium to large (mostly medium but it depends on the brand).

If anybody could help me out it would be much appreciated.

I would assume large would work. As a comparision I wear large, ~6 ', and weigh ~150ish. I think. 

Do not know if this will be of any help.