The biggest continent on Earth is Asia. Whether counting by population or by sheer land area, as of 2016, Asia ranks first among the seven continents.
Asia contains 17,139,445 square miles of land and over 4,000,000,000 people, as of 2016. It is also home to four of the top 10 countries with the most land area: Russia, China, India and Kazakhstan.
Russia is the largest country in the world and spans two continents: Asia and Europe. China ranks as the most populous country in the world, the fourth-largest country in the world in terms of land area, and the largest country exclusively within Asia. India ranks second in the world in terms of population and seventh in the world in terms of land area.