It is the fifth movie based in Disney's Marvel Universe to hit the milestone.
The film stars Chadwick Boseman as the crime-fighting ruler of Wakanda, a fictional African nation with the most advanced technology on earth.
Oscar winner Lupita Nyong'o, Michael B Jordan and Daniel Kaluuya play key roles, with The Hobbit star Martin Freeman as CIA agent Everett Ross.
The film has been widely praised as game-changing - including by Michelle Obama - for having a largely black cast and a black director, Ryan Coogler.
