Burj Khalifa

The Burj Khalifa (Arabic: , Arabic for ''Khalifa Tower''; pronounced English: /brd klif/), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. With a total height of 829.8 m (2,722 ft) and a roof height (excluding antenna) of 828 m (2,717 ft), the Burj Khalifa has been the tallest structure and building in the world since its topping out in late 2008.

Is this statement correct "the burj khalifa in dubai is the world tallest building"?
yes