Is the Sahara Desert smaller than Kalahari Desert?

No, the Sahara Desert is not smaller than the Kalahari Desert. In fact, the Sahara is the largest hot desert in the world, covering an area of about 9.2 million square kilometers (3.6 million square miles). The Kalahari Desert, on the other hand, is a much smaller desert, covering an area of about 900,000 square kilometers (350,000 square miles).