The Gobi Desert covers about a half million square miles.
It is the Gobi Desert.
The Gobi Desert covers about 500,000 square miles.
Sahara Desert
The entire continent is considered a desert, and at more than five million square miles, it is the largest on earth. It covers about 10% of the earth's surface.
The nearest thing to that would be the Sahara Desert which covers over 9,400,000 square kilometres (3,630,000 sq mi).
The Sahara Desert covers about 3.5 million square miles of the northern section of Africa. This is about 10 percent of the African continent.
1,470,000
The world's largest hot desert is the Sahara in Northern Africa. It covers an area of about 9.1 million square kilometres, or 3.5 million square miles. It is not the world's largest desert, however. See the related question.
The Namib Desert covers 31,000 square miles.
The Atacama desert covers about 40600 square miles.
The world's largest desert is the Antarctic Desert. It covers 5,400,000 square miles.
The Gobi Desert covers the southeastern region of Mongolia. This desert has an area of about 500,000 square miles and is the fifth largest desert.