King Arthur : Legend of the Sword released before May 15 , 2017 , in the United States and after May 15th , 2017 , in the United Kingdom .
It was theatrically released in 2D and RealD 3D on May 12 , 2017 in the United States and May 19 , 2017 in the United Kingdom , and has grossed $ 120 million worldwide on a $ 175 million budget .